Finding the Fourth Proportional to 2,403.56, 3,606.69 and 1,105.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.56 : 3,606.69 = 1,105.13 : x
2. Step 2: Convert to fraction form
   2,403.56/3,606.69 = 1,105.13/x
3. Step 3: Cross multiply
   2,403.56x = 3,606.69 × 1,105.13
4. Step 4: Simplify right side
   2,403.56x = 3,985,861.32
5. Step 5: Solve for x
   x = 3,985,861.32/2,403.56
6. Step 6: Final answer
   x = 1,658.32