Finding the Fourth Proportional to 2,041.31, 3,061.55 and 580.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,041.31 : 3,061.55 = 580.61 : x
2. Step 2: Convert to fraction form
   2,041.31/3,061.55 = 580.61/x
3. Step 3: Cross multiply
   2,041.31x = 3,061.55 × 580.61
4. Step 4: Simplify right side
   2,041.31x = 1,777,552.69
5. Step 5: Solve for x
   x = 1,777,552.69/2,041.31
6. Step 6: Final answer
   x = 870.79