Finding the Fourth Proportional to 2,758.89, 4,138.33 and 1,198.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.89 : 4,138.33 = 1,198.69 : x
2. Step 2: Convert to fraction form
   2,758.89/4,138.33 = 1,198.69/x
3. Step 3: Cross multiply
   2,758.89x = 4,138.33 × 1,198.69
4. Step 4: Simplify right side
   2,758.89x = 4,960,574.79
5. Step 5: Solve for x
   x = 4,960,574.79/2,758.89
6. Step 6: Final answer
   x = 1,798.03