Finding the Fourth Proportional to 2,679.83, 4,020.38 and 1,118.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.83 : 4,020.38 = 1,118.96 : x
2. Step 2: Convert to fraction form
   2,679.83/4,020.38 = 1,118.96/x
3. Step 3: Cross multiply
   2,679.83x = 4,020.38 × 1,118.96
4. Step 4: Simplify right side
   2,679.83x = 4,498,648.86
5. Step 5: Solve for x
   x = 4,498,648.86/2,679.83
6. Step 6: Final answer
   x = 1,678.71