Finding the Fourth Proportional to 2,448.06, 3,377.49 and 1,399.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,448.06 : 3,377.49 = 1,399.86 : x
2. Step 2: Convert to fraction form
   2,448.06/3,377.49 = 1,399.86/x
3. Step 3: Cross multiply
   2,448.06x = 3,377.49 × 1,399.86
4. Step 4: Simplify right side
   2,448.06x = 4,728,013.15
5. Step 5: Solve for x
   x = 4,728,013.15/2,448.06
6. Step 6: Final answer
   x = 1,931.33