Finding the Fourth Proportional to 2,087,359.30, 3,128,706.15 and 1,189,231.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087,359.30 : 3,128,706.15 = 1,189,231.30 : x
2. Step 2: Convert to fraction form
   2,087,359.30/3,128,706.15 = 1,189,231.30/x
3. Step 3: Cross multiply
   2,087,359.30x = 3,128,706.15 × 1,189,231.30
4. Step 4: Simplify right side
   2,087,359.30x = 3,720,755,282,082.50
5. Step 5: Solve for x
   x = 3,720,755,282,082.50/2,087,359.30
6. Step 6: Final answer
   x = 1,782,517.88