Finding the Fourth Proportional to 2,403.21, 3,606.62 and 1,105.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.21 : 3,606.62 = 1,105.59 : x
2. Step 2: Convert to fraction form
   2,403.21/3,606.62 = 1,105.59/x
3. Step 3: Cross multiply
   2,403.21x = 3,606.62 × 1,105.59
4. Step 4: Simplify right side
   2,403.21x = 3,987,443.01
5. Step 5: Solve for x
   x = 3,987,443.01/2,403.21
6. Step 6: Final answer
   x = 1,659.22