Finding the Fourth Proportional to 2,580.76, 3,871.50 and 849.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.76 : 3,871.50 = 849.16 : x
2. Step 2: Convert to fraction form
   2,580.76/3,871.50 = 849.16/x
3. Step 3: Cross multiply
   2,580.76x = 3,871.50 × 849.16
4. Step 4: Simplify right side
   2,580.76x = 3,287,522.94
5. Step 5: Solve for x
   x = 3,287,522.94/2,580.76
6. Step 6: Final answer
   x = 1,273.86