Finding the Fourth Proportional to 986,061.18, 1,360,736.72 and 556,381.30

Step by Step Solution

1. Step 1: Write the proportion equation
   986,061.18 : 1,360,736.72 = 556,381.30 : x
2. Step 2: Convert to fraction form
   986,061.18/1,360,736.72 = 556,381.30/x
3. Step 3: Cross multiply
   986,061.18x = 1,360,736.72 × 556,381.30
4. Step 4: Simplify right side
   986,061.18x = 757,088,465,231.34
5. Step 5: Solve for x
   x = 757,088,465,231.34/986,061.18
6. Step 6: Final answer
   x = 767,790.56