Finding the Fourth Proportional to 502,789.55, 693,808.54 and 296,025.30

Step by Step Solution

1. Step 1: Write the proportion equation
   502,789.55 : 693,808.54 = 296,025.30 : x
2. Step 2: Convert to fraction form
   502,789.55/693,808.54 = 296,025.30/x
3. Step 3: Cross multiply
   502,789.55x = 693,808.54 × 296,025.30
4. Step 4: Simplify right side
   502,789.55x = 205,384,880,456.00
5. Step 5: Solve for x
   x = 205,384,880,456.00/502,789.55
6. Step 6: Final answer
   x = 408,490.75