3.2) Calculate ending inventory balances. (Obj. 3). Compute the ending balance and the cost of the ending inventory of Raw Material 4-89, which has a unit price of $6.80. The ma- terials ledger card shows the following data: 3.2) Calculate ending inventory balances. (Obj. 3). Compute the ending balance and the cost of the ending inventory of Raw Material 4-89, which has a unit price of $6.80. The ma- terials ledger card shows the following data