WW Fabrication PART 3 - Year end adjustments using proration 5. Diana's counterpart, Bruce Wayne, is less convinced that WW Fabrication should expend the effort to calculate the cost of each individual job at year end. He recommends the proration approach. The finance group has provided Diana with the following information, which applies to the entire organization: Inventory-related Balances as of 12/31/2018 Accounts Total balance (unadjusted) Work-in-process $ 40,000 Finished goods 60,000 Cost of goods sold 1,900,000 Total $2,000,000 Overhead included in balance (unadjusted) $ 7,200 12,000 460,800 $480,000 a. Calculate the adjusted year end balances of the inventory accounts using proration based on unadjusted inventory account balances. WW Fabrication b. Calculate the adjusted year end balances of the inventory accounts using proration based on overhead in unadjusted inventory account balances