Finding the Fourth Proportional to 2,538.02, 3,502.87 and 1,543.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.02 : 3,502.87 = 1,543.61 : x
2. Step 2: Convert to fraction form
   2,538.02/3,502.87 = 1,543.61/x
3. Step 3: Cross multiply
   2,538.02x = 3,502.87 × 1,543.61
4. Step 4: Simplify right side
   2,538.02x = 5,407,070.06
5. Step 5: Solve for x
   x = 5,407,070.06/2,538.02
6. Step 6: Final answer
   x = 2,130.43