$($Related to Checkpoint $4\mathrm{.}1)($Analyzing liquidity$)$ Apex Fabricating, Inc., manufactures fenders and other after$-$market body panels for older automobiles. At the close of last year, the firm had $$11,216,151$ in current assets and $$4,154,130$ in current liabilities. The company's managers want to increase the firm's inventory, which will be financed using short$-$term debt. How much can the firm increase its inventory without its current ratio falling below $2\mathrm{.}1($assuming all other current assets and current liabilities remain constant$)?$

Apex Fabricating, Inc. could add up to $ $$ in inventories. $($Round to the nearest dollar.$)$