Finding the Fourth Proportional to 2,752.82, 4,128.34 and 903.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.82 : 4,128.34 = 903.56 : x
2. Step 2: Convert to fraction form
   2,752.82/4,128.34 = 903.56/x
3. Step 3: Cross multiply
   2,752.82x = 4,128.34 × 903.56
4. Step 4: Simplify right side
   2,752.82x = 3,730,202.89
5. Step 5: Solve for x
   x = 3,730,202.89/2,752.82
6. Step 6: Final answer
   x = 1,355.05