Finding the Fourth Proportional to 2,447.76, 3,377.90 and 1,399.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,447.76 : 3,377.90 = 1,399.82 : x
2. Step 2: Convert to fraction form
   2,447.76/3,377.90 = 1,399.82/x
3. Step 3: Cross multiply
   2,447.76x = 3,377.90 × 1,399.82
4. Step 4: Simplify right side
   2,447.76x = 4,728,451.98
5. Step 5: Solve for x
   x = 4,728,451.98/2,447.76
6. Step 6: Final answer
   x = 1,931.75