Finding the Fourth Proportional to 2,615.57, 3,609.56 and 1,553.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.57 : 3,609.56 = 1,553.86 : x
2. Step 2: Convert to fraction form
   2,615.57/3,609.56 = 1,553.86/x
3. Step 3: Cross multiply
   2,615.57x = 3,609.56 × 1,553.86
4. Step 4: Simplify right side
   2,615.57x = 5,608,750.90
5. Step 5: Solve for x
   x = 5,608,750.90/2,615.57
6. Step 6: Final answer
   x = 2,144.37