Finding the Fourth Proportional to 2,679.29, 4,019.57 and 1,118.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.29 : 4,019.57 = 1,118.43 : x
2. Step 2: Convert to fraction form
   2,679.29/4,019.57 = 1,118.43/x
3. Step 3: Cross multiply
   2,679.29x = 4,019.57 × 1,118.43
4. Step 4: Simplify right side
   2,679.29x = 4,495,591.20
5. Step 5: Solve for x
   x = 4,495,591.20/2,679.29
6. Step 6: Final answer
   x = 1,677.90