Finding the Fourth Proportional to 2,201.09, 3,300.55 and 1,089.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,201.09 : 3,300.55 = 1,089.22 : x
2. Step 2: Convert to fraction form
   2,201.09/3,300.55 = 1,089.22/x
3. Step 3: Cross multiply
   2,201.09x = 3,300.55 × 1,089.22
4. Step 4: Simplify right side
   2,201.09x = 3,595,036.46
5. Step 5: Solve for x
   x = 3,595,036.46/2,201.09
6. Step 6: Final answer
   x = 1,633.30