Finding the Fourth Proportional to 2,580.67, 3,871.41 and 848.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.67 : 3,871.41 = 848.89 : x
2. Step 2: Convert to fraction form
   2,580.67/3,871.41 = 848.89/x
3. Step 3: Cross multiply
   2,580.67x = 3,871.41 × 848.89
4. Step 4: Simplify right side
   2,580.67x = 3,286,401.23
5. Step 5: Solve for x
   x = 3,286,401.23/2,580.67
6. Step 6: Final answer
   x = 1,273.47