Finding the Fourth Proportional to 1,989.38, 2,745.27 and 1,105.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.38 : 2,745.27 = 1,105.18 : x
2. Step 2: Convert to fraction form
   1,989.38/2,745.27 = 1,105.18/x
3. Step 3: Cross multiply
   1,989.38x = 2,745.27 × 1,105.18
4. Step 4: Simplify right side
   1,989.38x = 3,034,017.50
5. Step 5: Solve for x
   x = 3,034,017.50/1,989.38
6. Step 6: Final answer
   x = 1,525.11