Finding the Fourth Proportional to 2,058.27, 3,086.58 and 871.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.27 : 3,086.58 = 871.83 : x
2. Step 2: Convert to fraction form
   2,058.27/3,086.58 = 871.83/x
3. Step 3: Cross multiply
   2,058.27x = 3,086.58 × 871.83
4. Step 4: Simplify right side
   2,058.27x = 2,690,973.04
5. Step 5: Solve for x
   x = 2,690,973.04/2,058.27
6. Step 6: Final answer
   x = 1,307.40