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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 $31$ :

Revenues$-$N Region

Revenues$-$S Region

Revenues$-$W Region

Operating Expenses$-N$ Region

Operating Expenses$-$S Region

Operating Expenses$-$W Region

Corporate Expenses$-$Dispatching

Corporate Expenses$-$Equipment Management

Corporate Expenses$-$Treasurer's

General Corporate Officers' Salaries

$$774,500$

$907,700$

$1,645,000$

$490,800$

$540,200$

$994,800$

$434,400$

$136,000$

$117,800$

$260,100$

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:

$\backslash$table$[[,$North,South,West$],[$Number of scheduled trains,$4,500,5,400,8,200]$ Number of railroad cars in inventory NORTH $900$ SOUTH $1,400$ West $1,100.$

$1.$ Prepare quarterly income statements showing operating income for the three regions. Use three column headings: NORTH, SOUTH, and WEST