Finding the Fourth Proportional to 3,714.54, 5,126.22 and 2,142.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,714.54 : 5,126.22 = 2,142.78 : x
2. Step 2: Convert to fraction form
   3,714.54/5,126.22 = 2,142.78/x
3. Step 3: Cross multiply
   3,714.54x = 5,126.22 × 2,142.78
4. Step 4: Simplify right side
   3,714.54x = 10,984,361.69
5. Step 5: Solve for x
   x = 10,984,361.69/3,714.54
6. Step 6: Final answer
   x = 2,957.13