Inventory Costing Methods$-$Perpetual Method Using the data below, assume that Portet Corporation uses the perpetual inventory system. Calculate the value of ending inventory and cost of goods sold at year$-$end using the perpetual method and $($a$)$ first$-$in$,$ first$-$out, $($b$)$ last$-$in$,$ first$-$out, and $($c$)$ weighted$-$average cost method. Round the cost per unit to $3$ decimal places and round your final answers to the nearest dollar.

UnitsUnit CostBeginning Inventory, January $11,200$$$38$Purchases:February $111,500$$$39$May $181,40040$October $231,10042$Sales:March $11,400$July $11,400$October $291,000$

Round the cost per unit to $3$ decimal places and round your final answers to the nearest dollar.

a$.$First$-$In$,$ First$-$OutEnding InventoryAnswer $1$

Cost of goods SoldAnswer $2$

b$.$Last$-$In$,$ First$-$OutEnding InventoryAnswer $3$

Cost of Goods SoldAnswer $4$

c$.$Weighted AverageEnding InventoryAnswer $5$

Cost of Goods SoldAnswer $6$