Finding the Fourth Proportional to 1,529.55, 2,293.30 and 789.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.55 : 2,293.30 = 789.61 : x
2. Step 2: Convert to fraction form
   1,529.55/2,293.30 = 789.61/x
3. Step 3: Cross multiply
   1,529.55x = 2,293.30 × 789.61
4. Step 4: Simplify right side
   1,529.55x = 1,810,812.61
5. Step 5: Solve for x
   x = 1,810,812.61/1,529.55
6. Step 6: Final answer
   x = 1,183.89