Finding the Fourth Proportional to 2,981.15, 4,471.98 and 789.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,981.15 : 4,471.98 = 789.85 : x
2. Step 2: Convert to fraction form
   2,981.15/4,471.98 = 789.85/x
3. Step 3: Cross multiply
   2,981.15x = 4,471.98 × 789.85
4. Step 4: Simplify right side
   2,981.15x = 3,532,196.03
5. Step 5: Solve for x
   x = 3,532,196.03/2,981.15
6. Step 6: Final answer
   x = 1,184.84