Finding the Fourth Proportional to 2,514.25, 3,772.17 and 1,128.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,514.25 : 3,772.17 = 1,128.78 : x
2. Step 2: Convert to fraction form
   2,514.25/3,772.17 = 1,128.78/x
3. Step 3: Cross multiply
   2,514.25x = 3,772.17 × 1,128.78
4. Step 4: Simplify right side
   2,514.25x = 4,257,950.05
5. Step 5: Solve for x
   x = 4,257,950.05/2,514.25
6. Step 6: Final answer
   x = 1,693.53