Finding the Fourth Proportional to 3,128.76, 4,312.72 and 2,464.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.76 : 4,312.72 = 2,464.56 : x
2. Step 2: Convert to fraction form
   3,128.76/4,312.72 = 2,464.56/x
3. Step 3: Cross multiply
   3,128.76x = 4,312.72 × 2,464.56
4. Step 4: Simplify right side
   3,128.76x = 10,628,957.20
5. Step 5: Solve for x
   x = 10,628,957.20/3,128.76
6. Step 6: Final answer
   x = 3,397.18