Finding the Fourth Proportional to 1,452.69, 2,005.43 and 989.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.69 : 2,005.43 = 989.37 : x
2. Step 2: Convert to fraction form
   1,452.69/2,005.43 = 989.37/x
3. Step 3: Cross multiply
   1,452.69x = 2,005.43 × 989.37
4. Step 4: Simplify right side
   1,452.69x = 1,984,107.33
5. Step 5: Solve for x
   x = 1,984,107.33/1,452.69
6. Step 6: Final answer
   x = 1,365.82