Finding the Fourth Proportional to 3,839.52, 5,759.20 and 1,242.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,839.52 : 5,759.20 = 1,242.56 : x
2. Step 2: Convert to fraction form
   3,839.52/5,759.20 = 1,242.56/x
3. Step 3: Cross multiply
   3,839.52x = 5,759.20 × 1,242.56
4. Step 4: Simplify right side
   3,839.52x = 7,156,151.55
5. Step 5: Solve for x
   x = 7,156,151.55/3,839.52
6. Step 6: Final answer
   x = 1,863.81