Finding the Fourth Proportional to 2,839.48, 3,919.98 and 2,142.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.48 : 3,919.98 = 2,142.52 : x
2. Step 2: Convert to fraction form
   2,839.48/3,919.98 = 2,142.52/x
3. Step 3: Cross multiply
   2,839.48x = 3,919.98 × 2,142.52
4. Step 4: Simplify right side
   2,839.48x = 8,398,635.55
5. Step 5: Solve for x
   x = 8,398,635.55/2,839.48
6. Step 6: Final answer
   x = 2,957.81