Finding the Fourth Proportional to 2,058.17, 3,086.39 and 671.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.17 : 3,086.39 = 671.10 : x
2. Step 2: Convert to fraction form
   2,058.17/3,086.39 = 671.10/x
3. Step 3: Cross multiply
   2,058.17x = 3,086.39 × 671.10
4. Step 4: Simplify right side
   2,058.17x = 2,071,272.97
5. Step 5: Solve for x
   x = 2,071,272.97/2,058.17
6. Step 6: Final answer
   x = 1,006.37