Finding the Fourth Proportional to 2,058.56, 3,086.98 and 1,277.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.56 : 3,086.98 = 1,277.39 : x
2. Step 2: Convert to fraction form
   2,058.56/3,086.98 = 1,277.39/x
3. Step 3: Cross multiply
   2,058.56x = 3,086.98 × 1,277.39
4. Step 4: Simplify right side
   2,058.56x = 3,943,277.38
5. Step 5: Solve for x
   x = 3,943,277.38/2,058.56
6. Step 6: Final answer
   x = 1,915.55