Finding the Fourth Proportional to 2,447.48, 3,377.72 and 1,399.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,447.48 : 3,377.72 = 1,399.52 : x
2. Step 2: Convert to fraction form
   2,447.48/3,377.72 = 1,399.52/x
3. Step 3: Cross multiply
   2,447.48x = 3,377.72 × 1,399.52
4. Step 4: Simplify right side
   2,447.48x = 4,727,186.69
5. Step 5: Solve for x
   x = 4,727,186.69/2,447.48
6. Step 6: Final answer
   x = 1,931.45