Finding the Fourth Proportional to 820,352, 1,132,085.76 and 443,520

Step by Step Solution

1. Step 1: Write the proportion equation
   820,352 : 1,132,085.76 = 443,520 : x
2. Step 2: Convert to fraction form
   820,352/1,132,085.76 = 443,520/x
3. Step 3: Cross multiply
   820,352x = 1,132,085.76 × 443,520
4. Step 4: Simplify right side
   820,352x = 502,102,676,275.20
5. Step 5: Solve for x
   x = 502,102,676,275.20/820,352
6. Step 6: Final answer
   x = 612,057.60