Finding the Fourth Proportional to 2,421.72, 3,633.04 and 1,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.72 : 3,633.04 = 1,105.56 : x
2. Step 2: Convert to fraction form
   2,421.72/3,633.04 = 1,105.56/x
3. Step 3: Cross multiply
   2,421.72x = 3,633.04 × 1,105.56
4. Step 4: Simplify right side
   2,421.72x = 4,016,543.70
5. Step 5: Solve for x
   x = 4,016,543.70/2,421.72
6. Step 6: Final answer
   x = 1,658.55