Finding the Fourth Proportional to 910,227.93, 1,256,144.72 and 496,787.31

Step by Step Solution

1. Step 1: Write the proportion equation
   910,227.93 : 1,256,144.72 = 496,787.31 : x
2. Step 2: Convert to fraction form
   910,227.93/1,256,144.72 = 496,787.31/x
3. Step 3: Cross multiply
   910,227.93x = 1,256,144.72 × 496,787.31
4. Step 4: Simplify right side
   910,227.93x = 624,036,762,727.94
5. Step 5: Solve for x
   x = 624,036,762,727.94/910,227.93
6. Step 6: Final answer
   x = 685,582.96