Finding the Fourth Proportional to 1,989.52, 2,745.54 and 1,105.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.52 : 2,745.54 = 1,105.33 : x
2. Step 2: Convert to fraction form
   1,989.52/2,745.54 = 1,105.33/x
3. Step 3: Cross multiply
   1,989.52x = 2,745.54 × 1,105.33
4. Step 4: Simplify right side
   1,989.52x = 3,034,727.73
5. Step 5: Solve for x
   x = 3,034,727.73/1,989.52
6. Step 6: Final answer
   x = 1,525.36