Finding the Fourth Proportional to 2,545.09, 3,816.59 and 789.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.09 : 3,816.59 = 789.67 : x
2. Step 2: Convert to fraction form
   2,545.09/3,816.59 = 789.67/x
3. Step 3: Cross multiply
   2,545.09x = 3,816.59 × 789.67
4. Step 4: Simplify right side
   2,545.09x = 3,013,847.45
5. Step 5: Solve for x
   x = 3,013,847.45/2,545.09
6. Step 6: Final answer
   x = 1,184.18