QP Corporated sold $5,470$ units of its product at $$45\mathrm{.}30$ per unit during the year and incurred operating expenses of $$6\mathrm{.}30$ per unit in selling the units. It began the year with $630$ units in inventory and made successive purchases of its product as follows.

Required:

Prepare comparative year$-$end income statements for the three inventory costing methods of FIFO, LIFO, and weighted average which includes a detailed cost of goods sold section as part of each statement. The company uses a periodic inventory system. Note: Round your average cost per unit to $2$ decimal places and round your final answers to nearest whole dollar amount.

$\backslash$table$[[$QP CORPORATION$],[$Income Statements Comparing FIFO, LIFO, and Weighted Average$],[$For Year Ended December $31],[,$FIFO,LIFO,$\backslash$table$[[$Weighted$],[$Average$]]],[$Sales$],[$Cost of goods sold:$],[$Beginning inventory, January $1],[$Cost of purchases$],[$Cost of goods available for sale,$0,0,0],[$Less: Ending inventory, December $31],[$Cost of goods sold,$0,0,0],[$Gross profit,$0,0,0],[$Operating expenses,,,$4],[$Net income,$$,0,$$