Finding the Fourth Proportional to 2,650.28, 3,976.57 and 1,263.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.28 : 3,976.57 = 1,263.63 : x
2. Step 2: Convert to fraction form
   2,650.28/3,976.57 = 1,263.63/x
3. Step 3: Cross multiply
   2,650.28x = 3,976.57 × 1,263.63
4. Step 4: Simplify right side
   2,650.28x = 5,024,913.15
5. Step 5: Solve for x
   x = 5,024,913.15/2,650.28
6. Step 6: Final answer
   x = 1,895.99