Finding the Fourth Proportional to 2,402.82, 3,605.04 and 1,105.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.82 : 3,605.04 = 1,105.20 : x
2. Step 2: Convert to fraction form
   2,402.82/3,605.04 = 1,105.20/x
3. Step 3: Cross multiply
   2,402.82x = 3,605.04 × 1,105.20
4. Step 4: Simplify right side
   2,402.82x = 3,984,290.21
5. Step 5: Solve for x
   x = 3,984,290.21/2,402.82
6. Step 6: Final answer
   x = 1,658.17