Finding the Fourth Proportional to 2,557.75, 3,531.39 and 1,675.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.75 : 3,531.39 = 1,675.12 : x
2. Step 2: Convert to fraction form
   2,557.75/3,531.39 = 1,675.12/x
3. Step 3: Cross multiply
   2,557.75x = 3,531.39 × 1,675.12
4. Step 4: Simplify right side
   2,557.75x = 5,915,502.02
5. Step 5: Solve for x
   x = 5,915,502.02/2,557.75
6. Step 6: Final answer
   x = 2,312.78