Finding the Fourth Proportional to 2,752.32, 4,128.12 and 903.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.32 : 4,128.12 = 903.12 : x
2. Step 2: Convert to fraction form
   2,752.32/4,128.12 = 903.12/x
3. Step 3: Cross multiply
   2,752.32x = 4,128.12 × 903.12
4. Step 4: Simplify right side
   2,752.32x = 3,728,187.73
5. Step 5: Solve for x
   x = 3,728,187.73/2,752.32
6. Step 6: Final answer
   x = 1,354.56