Finding the Fourth Proportional to 503,404.72, 694,714.27 and 285,622.58

Step by Step Solution

1. Step 1: Write the proportion equation
   503,404.72 : 694,714.27 = 285,622.58 : x
2. Step 2: Convert to fraction form
   503,404.72/694,714.27 = 285,622.58/x
3. Step 3: Cross multiply
   503,404.72x = 694,714.27 × 285,622.58
4. Step 4: Simplify right side
   503,404.72x = 198,426,082,160.22
5. Step 5: Solve for x
   x = 198,426,082,160.22/503,404.72
6. Step 6: Final answer
   x = 394,168.10