Finding the Fourth Proportional to 2,580.92, 3,871.98 and 849.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.92 : 3,871.98 = 849.56 : x
2. Step 2: Convert to fraction form
   2,580.92/3,871.98 = 849.56/x
3. Step 3: Cross multiply
   2,580.92x = 3,871.98 × 849.56
4. Step 4: Simplify right side
   2,580.92x = 3,289,479.33
5. Step 5: Solve for x
   x = 3,289,479.33/2,580.92
6. Step 6: Final answer
   x = 1,274.54