Finding the Fourth Proportional to 835,610.72, 1,152,029.12 and 664,101.28

Step by Step Solution

1. Step 1: Write the proportion equation
   835,610.72 : 1,152,029.12 = 664,101.28 : x
2. Step 2: Convert to fraction form
   835,610.72/1,152,029.12 = 664,101.28/x
3. Step 3: Cross multiply
   835,610.72x = 1,152,029.12 × 664,101.28
4. Step 4: Simplify right side
   835,610.72x = 765,064,013,189.27
5. Step 5: Solve for x
   x = 765,064,013,189.27/835,610.72
6. Step 6: Final answer
   x = 915,574.67