Finding the Fourth Proportional to 2,650.68, 3,976.27 and 1,006.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.68 : 3,976.27 = 1,006.78 : x
2. Step 2: Convert to fraction form
   2,650.68/3,976.27 = 1,006.78/x
3. Step 3: Cross multiply
   2,650.68x = 3,976.27 × 1,006.78
4. Step 4: Simplify right side
   2,650.68x = 4,003,229.11
5. Step 5: Solve for x
   x = 4,003,229.11/2,650.68
6. Step 6: Final answer
   x = 1,510.26