Finding the Fourth Proportional to 2,678.63, 4,016.63 and 1,118.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.63 : 4,016.63 = 1,118.17 : x
2. Step 2: Convert to fraction form
   2,678.63/4,016.63 = 1,118.17/x
3. Step 3: Cross multiply
   2,678.63x = 4,016.63 × 1,118.17
4. Step 4: Simplify right side
   2,678.63x = 4,491,255.08
5. Step 5: Solve for x
   x = 4,491,255.08/2,678.63
6. Step 6: Final answer
   x = 1,676.70