Finding the Fourth Proportional to 2,752.52, 4,128.86 and 903.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.52 : 4,128.86 = 903.64 : x
2. Step 2: Convert to fraction form
   2,752.52/4,128.86 = 903.64/x
3. Step 3: Cross multiply
   2,752.52x = 4,128.86 × 903.64
4. Step 4: Simplify right side
   2,752.52x = 3,731,003.05
5. Step 5: Solve for x
   x = 3,731,003.05/2,752.52
6. Step 6: Final answer
   x = 1,355.49