Finding the Fourth Proportional to 793,931.72, 1,189,510.86 and 661,661.96

Step by Step Solution

1. Step 1: Write the proportion equation
   793,931.72 : 1,189,510.86 = 661,661.96 : x
2. Step 2: Convert to fraction form
   793,931.72/1,189,510.86 = 661,661.96/x
3. Step 3: Cross multiply
   793,931.72x = 1,189,510.86 × 661,661.96
4. Step 4: Simplify right side
   793,931.72x = 787,054,087,068.89
5. Step 5: Solve for x
   x = 787,054,087,068.89/793,931.72
6. Step 6: Final answer
   x = 991,337.25