How to re-order an array of objects based on a list of ids

I have an object Task as you can see below:

class Task
  include HTTParty

  attr_accessor :id, :name, :assignee_status, :order

  def initialize(id, name, assignee_status)
    self.id = id
    self.name = name
    self.status = status
    self.order = order
 end
end

So, when I load a list of tasks, I give them a specific order, like this:

i = 0
@tasks.each do |at|
    at.order = i
    i += 100
end    

This list is, then, sent over json to a client app which shows is to the user and allows for drag'n'drop. After some task is re-ordered, the front-end app sends a list back to the server with all the task ids in the new order.

Example: 23,45,74,22,11,98,23

What I want to do is the re-order the array of objects based on the ids that I found. What I thought about doing was to set all order to 0 and then search each object individually on the matrix and set their priority accordingly. But this just feels wrong... feels to computing intensive.

Is there a clever way to do something like:

ArrayOfTaskObjects.orderbyAttribute(id) ??