Finding the Fourth Proportional to 2,575.85, 3,553.07 and 1,580.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.85 : 3,553.07 = 1,580.15 : x
2. Step 2: Convert to fraction form
   2,575.85/3,553.07 = 1,580.15/x
3. Step 3: Cross multiply
   2,575.85x = 3,553.07 × 1,580.15
4. Step 4: Simplify right side
   2,575.85x = 5,614,384.54
5. Step 5: Solve for x
   x = 5,614,384.54/2,575.85
6. Step 6: Final answer
   x = 2,179.63