Finding the Fourth Proportional to 2,447.89, 3,378.03 and 1,328.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,447.89 : 3,378.03 = 1,328.78 : x
2. Step 2: Convert to fraction form
   2,447.89/3,378.03 = 1,328.78/x
3. Step 3: Cross multiply
   2,447.89x = 3,378.03 × 1,328.78
4. Step 4: Simplify right side
   2,447.89x = 4,488,658.70
5. Step 5: Solve for x
   x = 4,488,658.70/2,447.89
6. Step 6: Final answer
   x = 1,833.68