Using Financial Ratios

$4-4.($Analyzing liquidity$)($Related to Checkpoint $4\mathrm{.}1$ on page $119)$ Apex Fabricating, Inc., manufactures fenders and other after$-$fnarket body panels for older automobiles. At the close of last year, the firm Had $$10,381,800$ in current assets and $$4,152,720$ in current liabilities. The company's managers want to increase its inventory, which will be financed using short$-$term debt. How much can the firm increase its inventory, financing it with short$-$term borrowing, without its current ratio falling below $2\mathrm{.}0($assuming all other current assets and current liabilities remain constant$)?$