Finding the Fourth Proportional to 2,440.17, 3,660.25 and 1,142.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,440.17 : 3,660.25 = 1,142.55 : x
2. Step 2: Convert to fraction form
   2,440.17/3,660.25 = 1,142.55/x
3. Step 3: Cross multiply
   2,440.17x = 3,660.25 × 1,142.55
4. Step 4: Simplify right side
   2,440.17x = 4,182,018.64
5. Step 5: Solve for x
   x = 4,182,018.64/2,440.17
6. Step 6: Final answer
   x = 1,713.82