Finding the Fourth Proportional to 2,124.55, 3,187.52 and 1,028.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.55 : 3,187.52 = 1,028.78 : x
2. Step 2: Convert to fraction form
   2,124.55/3,187.52 = 1,028.78/x
3. Step 3: Cross multiply
   2,124.55x = 3,187.52 × 1,028.78
4. Step 4: Simplify right side
   2,124.55x = 3,279,256.83
5. Step 5: Solve for x
   x = 3,279,256.83/2,124.55
6. Step 6: Final answer
   x = 1,543.51