Finding the Fourth Proportional to 1,452.81, 2,004.89 and 789.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.81 : 2,004.89 = 789.68 : x
2. Step 2: Convert to fraction form
   1,452.81/2,004.89 = 789.68/x
3. Step 3: Cross multiply
   1,452.81x = 2,004.89 × 789.68
4. Step 4: Simplify right side
   1,452.81x = 1,583,213.48
5. Step 5: Solve for x
   x = 1,583,213.48/1,452.81
6. Step 6: Final answer
   x = 1,089.76