Finding the Fourth Proportional to 538,404.09, 743,002.63 and 296,695.31

Step by Step Solution

1. Step 1: Write the proportion equation
   538,404.09 : 743,002.63 = 296,695.31 : x
2. Step 2: Convert to fraction form
   538,404.09/743,002.63 = 296,695.31/x
3. Step 3: Cross multiply
   538,404.09x = 743,002.63 × 296,695.31
4. Step 4: Simplify right side
   538,404.09x = 220,445,397,659.61
5. Step 5: Solve for x
   x = 220,445,397,659.61/538,404.09
6. Step 6: Final answer
   x = 409,442.28