Finding the Fourth Proportional to 3,118.71, 4,679.59 and 1,271.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118.71 : 4,679.59 = 1,271.10 : x
2. Step 2: Convert to fraction form
   3,118.71/4,679.59 = 1,271.10/x
3. Step 3: Cross multiply
   3,118.71x = 4,679.59 × 1,271.10
4. Step 4: Simplify right side
   3,118.71x = 5,948,226.85
5. Step 5: Solve for x
   x = 5,948,226.85/3,118.71
6. Step 6: Final answer
   x = 1,907.27