Finding the Fourth Proportional to 2,201.55, 3,303.50 and 1,105.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,201.55 : 3,303.50 = 1,105.89 : x
2. Step 2: Convert to fraction form
   2,201.55/3,303.50 = 1,105.89/x
3. Step 3: Cross multiply
   2,201.55x = 3,303.50 × 1,105.89
4. Step 4: Simplify right side
   2,201.55x = 3,653,302.09
5. Step 5: Solve for x
   x = 3,653,302.09/2,201.55
6. Step 6: Final answer
   x = 1,659.42