Finding the Fourth Proportional to 4,081.78, 6,123 and 1,308.82

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.78 : 6,123 = 1,308.82 : x
2. Step 2: Convert to fraction form
   4,081.78/6,123 = 1,308.82/x
3. Step 3: Cross multiply
   4,081.78x = 6,123 × 1,308.82
4. Step 4: Simplify right side
   4,081.78x = 8,013,904.86
5. Step 5: Solve for x
   x = 8,013,904.86/4,081.78
6. Step 6: Final answer
   x = 1,963.34