Finding the Fourth Proportional to 2,058.40, 3,086.92 and 671.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.40 : 3,086.92 = 671.37 : x
2. Step 2: Convert to fraction form
   2,058.40/3,086.92 = 671.37/x
3. Step 3: Cross multiply
   2,058.40x = 3,086.92 × 671.37
4. Step 4: Simplify right side
   2,058.40x = 2,072,465.48
5. Step 5: Solve for x
   x = 2,072,465.48/2,058.40
6. Step 6: Final answer
   x = 1,006.83