Finding the Fourth Proportional to 2,058.60, 2,839.50 and 1,271.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.60 : 2,839.50 = 1,271.64 : x
2. Step 2: Convert to fraction form
   2,058.60/2,839.50 = 1,271.64/x
3. Step 3: Cross multiply
   2,058.60x = 2,839.50 × 1,271.64
4. Step 4: Simplify right side
   2,058.60x = 3,610,821.78
5. Step 5: Solve for x
   x = 3,610,821.78/2,058.60
6. Step 6: Final answer
   x = 1,754.02