Finding the Fourth Proportional to 990,131.85, 1,366,106.31 and 560,402.82

Step by Step Solution

1. Step 1: Write the proportion equation
   990,131.85 : 1,366,106.31 = 560,402.82 : x
2. Step 2: Convert to fraction form
   990,131.85/1,366,106.31 = 560,402.82/x
3. Step 3: Cross multiply
   990,131.85x = 1,366,106.31 × 560,402.82
4. Step 4: Simplify right side
   990,131.85x = 765,569,828,543.79
5. Step 5: Solve for x
   x = 765,569,828,543.79/990,131.85
6. Step 6: Final answer
   x = 773,199.88