Finding the Fourth Proportional to 2,538.24, 3,501.72 and 1,543.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.24 : 3,501.72 = 1,543.35 : x
2. Step 2: Convert to fraction form
   2,538.24/3,501.72 = 1,543.35/x
3. Step 3: Cross multiply
   2,538.24x = 3,501.72 × 1,543.35
4. Step 4: Simplify right side
   2,538.24x = 5,404,379.56
5. Step 5: Solve for x
   x = 5,404,379.56/2,538.24
6. Step 6: Final answer
   x = 2,129.18