Finding the Fourth Proportional to 4,081.68, 6,121.71 and 2,000.79

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.68 : 6,121.71 = 2,000.79 : x
2. Step 2: Convert to fraction form
   4,081.68/6,121.71 = 2,000.79/x
3. Step 3: Cross multiply
   4,081.68x = 6,121.71 × 2,000.79
4. Step 4: Simplify right side
   4,081.68x = 12,248,256.15
5. Step 5: Solve for x
   x = 12,248,256.15/4,081.68
6. Step 6: Final answer
   x = 3,000.79