Finding the Fourth Proportional to 987,786.56, 1,363,140.96 and 535,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   987,786.56 : 1,363,140.96 = 535,078.72 : x
2. Step 2: Convert to fraction form
   987,786.56/1,363,140.96 = 535,078.72/x
3. Step 3: Cross multiply
   987,786.56x = 1,363,140.96 × 535,078.72
4. Step 4: Simplify right side
   987,786.56x = 729,387,720,056.37
5. Step 5: Solve for x
   x = 729,387,720,056.37/987,786.56
6. Step 6: Final answer
   x = 738,406.20