Finding the Fourth Proportional to 2,751.89, 4,128.46 and 903.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,751.89 : 4,128.46 = 903.16 : x
2. Step 2: Convert to fraction form
   2,751.89/4,128.46 = 903.16/x
3. Step 3: Cross multiply
   2,751.89x = 4,128.46 × 903.16
4. Step 4: Simplify right side
   2,751.89x = 3,728,659.93
5. Step 5: Solve for x
   x = 3,728,659.93/2,751.89
6. Step 6: Final answer
   x = 1,354.95