Finding the Fourth Proportional to 2,752.49, 4,128.59 and 903.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.49 : 4,128.59 = 903.36 : x
2. Step 2: Convert to fraction form
   2,752.49/4,128.59 = 903.36/x
3. Step 3: Cross multiply
   2,752.49x = 4,128.59 × 903.36
4. Step 4: Simplify right side
   2,752.49x = 3,729,592.50
5. Step 5: Solve for x
   x = 3,729,592.50/2,752.49
6. Step 6: Final answer
   x = 1,354.99