Finding the Fourth Proportional to 571,498.55, 855,566.17 and 381,487.62

Step by Step Solution

1. Step 1: Write the proportion equation
   571,498.55 : 855,566.17 = 381,487.62 : x
2. Step 2: Convert to fraction form
   571,498.55/855,566.17 = 381,487.62/x
3. Step 3: Cross multiply
   571,498.55x = 855,566.17 × 381,487.62
4. Step 4: Simplify right side
   571,498.55x = 326,387,901,945.82
5. Step 5: Solve for x
   x = 326,387,901,945.82/571,498.55
6. Step 6: Final answer
   x = 571,108.89