Finding the Fourth Proportional to 557,604.27, 769,468.82 and 315,881.91

Step by Step Solution

1. Step 1: Write the proportion equation
   557,604.27 : 769,468.82 = 315,881.91 : x
2. Step 2: Convert to fraction form
   557,604.27/769,468.82 = 315,881.91/x
3. Step 3: Cross multiply
   557,604.27x = 769,468.82 × 315,881.91
4. Step 4: Simplify right side
   557,604.27x = 243,061,278,967.64
5. Step 5: Solve for x
   x = 243,061,278,967.64/557,604.27
6. Step 6: Final answer
   x = 435,902.83