Finding the Fourth Proportional to 1,452.77, 2,004.77 and 789.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.77 : 2,004.77 = 789.61 : x
2. Step 2: Convert to fraction form
   1,452.77/2,004.77 = 789.61/x
3. Step 3: Cross multiply
   1,452.77x = 2,004.77 × 789.61
4. Step 4: Simplify right side
   1,452.77x = 1,582,975.47
5. Step 5: Solve for x
   x = 1,582,975.47/1,452.77
6. Step 6: Final answer
   x = 1,089.63