Finding the Fourth Proportional to 2,487.48, 3,432.78 and 1,543.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.48 : 3,432.78 = 1,543.10 : x
2. Step 2: Convert to fraction form
   2,487.48/3,432.78 = 1,543.10/x
3. Step 3: Cross multiply
   2,487.48x = 3,432.78 × 1,543.10
4. Step 4: Simplify right side
   2,487.48x = 5,297,122.82
5. Step 5: Solve for x
   x = 5,297,122.82/2,487.48
6. Step 6: Final answer
   x = 2,129.51