Finding the Fourth Proportional to 2,538.05, 3,501.45 and 1,543.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.05 : 3,501.45 = 1,543.16 : x
2. Step 2: Convert to fraction form
   2,538.05/3,501.45 = 1,543.16/x
3. Step 3: Cross multiply
   2,538.05x = 3,501.45 × 1,543.16
4. Step 4: Simplify right side
   2,538.05x = 5,403,306.34
5. Step 5: Solve for x
   x = 5,403,306.34/2,538.05
6. Step 6: Final answer
   x = 2,128.92