Finding the Fourth Proportional to 2,058.06, 3,086.37 and 1,276.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.06 : 3,086.37 = 1,276.86 : x
2. Step 2: Convert to fraction form
   2,058.06/3,086.37 = 1,276.86/x
3. Step 3: Cross multiply
   2,058.06x = 3,086.37 × 1,276.86
4. Step 4: Simplify right side
   2,058.06x = 3,940,862.40
5. Step 5: Solve for x
   x = 3,940,862.40/2,058.06
6. Step 6: Final answer
   x = 1,914.84