Finding the Fourth Proportional to 982,870.59, 1,356,779.91 and 660,767.50

Step by Step Solution

1. Step 1: Write the proportion equation
   982,870.59 : 1,356,779.91 = 660,767.50 : x
2. Step 2: Convert to fraction form
   982,870.59/1,356,779.91 = 660,767.50/x
3. Step 3: Cross multiply
   982,870.59x = 1,356,779.91 × 660,767.50
4. Step 4: Simplify right side
   982,870.59x = 896,516,069,180.93
5. Step 5: Solve for x
   x = 896,516,069,180.93/982,870.59
6. Step 6: Final answer
   x = 912,140.50