Finding the Fourth Proportional to 2,590.72, 3,575.24 and 1,543.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.72 : 3,575.24 = 1,543.39 : x
2. Step 2: Convert to fraction form
   2,590.72/3,575.24 = 1,543.39/x
3. Step 3: Cross multiply
   2,590.72x = 3,575.24 × 1,543.39
4. Step 4: Simplify right side
   2,590.72x = 5,517,978.80
5. Step 5: Solve for x
   x = 5,517,978.80/2,590.72
6. Step 6: Final answer
   x = 2,129.90