Finding the Fourth Proportional to 2,758.62, 4,139.16 and 1,118.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.62 : 4,139.16 = 1,118.38 : x
2. Step 2: Convert to fraction form
   2,758.62/4,139.16 = 1,118.38/x
3. Step 3: Cross multiply
   2,758.62x = 4,139.16 × 1,118.38
4. Step 4: Simplify right side
   2,758.62x = 4,629,153.76
5. Step 5: Solve for x
   x = 4,629,153.76/2,758.62
6. Step 6: Final answer
   x = 1,678.07