Finding the Fourth Proportional to 719,162.82, 992,468.52 and 392,493.72

Step by Step Solution

1. Step 1: Write the proportion equation
   719,162.82 : 992,468.52 = 392,493.72 : x
2. Step 2: Convert to fraction form
   719,162.82/992,468.52 = 392,493.72/x
3. Step 3: Cross multiply
   719,162.82x = 992,468.52 × 392,493.72
4. Step 4: Simplify right side
   719,162.82x = 389,537,661,397.69
5. Step 5: Solve for x
   x = 389,537,661,397.69/719,162.82
6. Step 6: Final answer
   x = 541,654.34