Finding the Fourth Proportional to 901,005.76, 1,243,142.13 and 528,466.72

Step by Step Solution

1. Step 1: Write the proportion equation
   901,005.76 : 1,243,142.13 = 528,466.72 : x
2. Step 2: Convert to fraction form
   901,005.76/1,243,142.13 = 528,466.72/x
3. Step 3: Cross multiply
   901,005.76x = 1,243,142.13 × 528,466.72
4. Step 4: Simplify right side
   901,005.76x = 656,959,243,934.91
5. Step 5: Solve for x
   x = 656,959,243,934.91/901,005.76
6. Step 6: Final answer
   x = 729,139.89