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Profit center responsibility reporting for a service company Thomas Railroad Company organizes its three divisions, the North (N), South (S), and West (W) regions, as profit centers. The chief executive officer (CEO) evaluates divisional performance, using operating income as a percent of revenues. The following quarterly income and expense accounts were provided from the trial balance as of December 31: The company operates three support departments: the Dispatching Department, the Equipment Management Department, and the Treasurer's Department. The Dispatching Department manages the scheduling and releasing of completed trains. The Equipment Management Department manages the railroad cars inventories. It makes sure the right freight cars are at the right place at the right time. The Treasurer's Department conducts a variety of services for the company as a whole. The following additional information has been gathered: 1. Determine the dispatching rate per train by dividing service cost by output. For each region's dispatching cost, multiply the dispatching rate by the number of scheduled trains. Repeat this process for the other support department allocations. Subtract the support department allocations for a region from that region's operating income before such allocations. 2. What is the profit margin of each region? Round to one decimal place. Identify the most successful region according to the profit margin