Finding the Fourth Proportional to 2,662.44, 3,990.17 and 1,100.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.44 : 3,990.17 = 1,100.67 : x
2. Step 2: Convert to fraction form
   2,662.44/3,990.17 = 1,100.67/x
3. Step 3: Cross multiply
   2,662.44x = 3,990.17 × 1,100.67
4. Step 4: Simplify right side
   2,662.44x = 4,391,854.91
5. Step 5: Solve for x
   x = 4,391,854.91/2,662.44
6. Step 6: Final answer
   x = 1,649.56