Finding the Fourth Proportional to 4,081.59, 6,121.17 and 1,308.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.59 : 6,121.17 = 1,308.15 : x
2. Step 2: Convert to fraction form
   4,081.59/6,121.17 = 1,308.15/x
3. Step 3: Cross multiply
   4,081.59x = 6,121.17 × 1,308.15
4. Step 4: Simplify right side
   4,081.59x = 8,007,408.54
5. Step 5: Solve for x
   x = 8,007,408.54/4,081.59
6. Step 6: Final answer
   x = 1,961.84