Finding the Fourth Proportional to 1,452.70, 2,004.72 and 789.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.70 : 2,004.72 = 789.56 : x
2. Step 2: Convert to fraction form
   1,452.70/2,004.72 = 789.56/x
3. Step 3: Cross multiply
   1,452.70x = 2,004.72 × 789.56
4. Step 4: Simplify right side
   1,452.70x = 1,582,846.72
5. Step 5: Solve for x
   x = 1,582,846.72/1,452.70
6. Step 6: Final answer
   x = 1,089.59