Finding the Fourth Proportional to 2,447.98, 3,377.86 and 1,399.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,447.98 : 3,377.86 = 1,399.84 : x
2. Step 2: Convert to fraction form
   2,447.98/3,377.86 = 1,399.84/x
3. Step 3: Cross multiply
   2,447.98x = 3,377.86 × 1,399.84
4. Step 4: Simplify right side
   2,447.98x = 4,728,474.54
5. Step 5: Solve for x
   x = 4,728,474.54/2,447.98
6. Step 6: Final answer
   x = 1,931.58