Finding the Fourth Proportional to 2,002.76, 2,763.72 and 1,163.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.76 : 2,763.72 = 1,163.40 : x
2. Step 2: Convert to fraction form
   2,002.76/2,763.72 = 1,163.40/x
3. Step 3: Cross multiply
   2,002.76x = 2,763.72 × 1,163.40
4. Step 4: Simplify right side
   2,002.76x = 3,215,311.85
5. Step 5: Solve for x
   x = 3,215,311.85/2,002.76
6. Step 6: Final answer
   x = 1,605.44