Finding the Fourth Proportional to 2,359.88, 3,539.40 and 1,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.88 : 3,539.40 = 1,061.12 : x
2. Step 2: Convert to fraction form
   2,359.88/3,539.40 = 1,061.12/x
3. Step 3: Cross multiply
   2,359.88x = 3,539.40 × 1,061.12
4. Step 4: Simplify right side
   2,359.88x = 3,755,728.13
5. Step 5: Solve for x
   x = 3,755,728.13/2,359.88
6. Step 6: Final answer
   x = 1,591.49