Finding the Fourth Proportional to 2,448.47, 3,375.06 and 1,661.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,448.47 : 3,375.06 = 1,661.15 : x
2. Step 2: Convert to fraction form
   2,448.47/3,375.06 = 1,661.15/x
3. Step 3: Cross multiply
   2,448.47x = 3,375.06 × 1,661.15
4. Step 4: Simplify right side
   2,448.47x = 5,606,480.92
5. Step 5: Solve for x
   x = 5,606,480.92/2,448.47
6. Step 6: Final answer
   x = 2,289.79