Finding the Fourth Proportional to 2,620.68, 3,613.17 and 2,146.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.68 : 3,613.17 = 2,146.83 : x
2. Step 2: Convert to fraction form
   2,620.68/3,613.17 = 2,146.83/x
3. Step 3: Cross multiply
   2,620.68x = 3,613.17 × 2,146.83
4. Step 4: Simplify right side
   2,620.68x = 7,756,861.75
5. Step 5: Solve for x
   x = 7,756,861.75/2,620.68
6. Step 6: Final answer
   x = 2,959.87