Finding the Fourth Proportional to 3,134.40, 4,354.50 and 3,105.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,134.40 : 4,354.50 = 3,105.88 : x
2. Step 2: Convert to fraction form
   3,134.40/4,354.50 = 3,105.88/x
3. Step 3: Cross multiply
   3,134.40x = 4,354.50 × 3,105.88
4. Step 4: Simplify right side
   3,134.40x = 13,524,554.46
5. Step 5: Solve for x
   x = 13,524,554.46/3,134.40
6. Step 6: Final answer
   x = 4,314.88