Finding the Fourth Proportional to 2,447.78, 3,377.83 and 1,328.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,447.78 : 3,377.83 = 1,328.67 : x
2. Step 2: Convert to fraction form
   2,447.78/3,377.83 = 1,328.67/x
3. Step 3: Cross multiply
   2,447.78x = 3,377.83 × 1,328.67
4. Step 4: Simplify right side
   2,447.78x = 4,488,021.39
5. Step 5: Solve for x
   x = 4,488,021.39/2,447.78
6. Step 6: Final answer
   x = 1,833.51