Finding the Fourth Proportional to 2,600.42, 3,589.17 and 1,553.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.42 : 3,589.17 = 1,553.30 : x
2. Step 2: Convert to fraction form
   2,600.42/3,589.17 = 1,553.30/x
3. Step 3: Cross multiply
   2,600.42x = 3,589.17 × 1,553.30
4. Step 4: Simplify right side
   2,600.42x = 5,575,057.76
5. Step 5: Solve for x
   x = 5,575,057.76/2,600.42
6. Step 6: Final answer
   x = 2,143.91