Finding the Fourth Proportional to 2,544.53, 3,817.20 and 789.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,544.53 : 3,817.20 = 789.12 : x
2. Step 2: Convert to fraction form
   2,544.53/3,817.20 = 789.12/x
3. Step 3: Cross multiply
   2,544.53x = 3,817.20 × 789.12
4. Step 4: Simplify right side
   2,544.53x = 3,012,228.86
5. Step 5: Solve for x
   x = 3,012,228.86/2,544.53
6. Step 6: Final answer
   x = 1,183.81