Finding the Fourth Proportional to 2,399.73, 3,311.61 and 1,351.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.73 : 3,311.61 = 1,351.79 : x
2. Step 2: Convert to fraction form
   2,399.73/3,311.61 = 1,351.79/x
3. Step 3: Cross multiply
   2,399.73x = 3,311.61 × 1,351.79
4. Step 4: Simplify right side
   2,399.73x = 4,476,601.28
5. Step 5: Solve for x
   x = 4,476,601.28/2,399.73
6. Step 6: Final answer
   x = 1,865.46