Finding the Fourth Proportional to 3,839.92, 5,760.50 and 1,242.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,839.92 : 5,760.50 = 1,242.24 : x
2. Step 2: Convert to fraction form
   3,839.92/5,760.50 = 1,242.24/x
3. Step 3: Cross multiply
   3,839.92x = 5,760.50 × 1,242.24
4. Step 4: Simplify right side
   3,839.92x = 7,155,923.52
5. Step 5: Solve for x
   x = 7,155,923.52/3,839.92
6. Step 6: Final answer
   x = 1,863.56