Finding the Fourth Proportional to 2,189.24, 3,020.28 and 1,443.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.24 : 3,020.28 = 1,443.56 : x
2. Step 2: Convert to fraction form
   2,189.24/3,020.28 = 1,443.56/x
3. Step 3: Cross multiply
   2,189.24x = 3,020.28 × 1,443.56
4. Step 4: Simplify right side
   2,189.24x = 4,359,940.30
5. Step 5: Solve for x
   x = 4,359,940.30/2,189.24
6. Step 6: Final answer
   x = 1,991.54