Finding the Fourth Proportional to 931,500.79, 1,397,251.18 and 577,206.79

Step by Step Solution

1. Step 1: Write the proportion equation
   931,500.79 : 1,397,251.18 = 577,206.79 : x
2. Step 2: Convert to fraction form
   931,500.79/1,397,251.18 = 577,206.79/x
3. Step 3: Cross multiply
   931,500.79x = 1,397,251.18 × 577,206.79
4. Step 4: Simplify right side
   931,500.79x = 806,502,865,659.89
5. Step 5: Solve for x
   x = 806,502,865,659.89/931,500.79
6. Step 6: Final answer
   x = 865,810.18