Finding the Fourth Proportional to 2,575.87, 3,552.73 and 1,580.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.87 : 3,552.73 = 1,580.31 : x
2. Step 2: Convert to fraction form
   2,575.87/3,552.73 = 1,580.31/x
3. Step 3: Cross multiply
   2,575.87x = 3,552.73 × 1,580.31
4. Step 4: Simplify right side
   2,575.87x = 5,614,410.80
5. Step 5: Solve for x
   x = 5,614,410.80/2,575.87
6. Step 6: Final answer
   x = 2,179.62