Finding the Fourth Proportional to 2,869.61, 4,303.86 and 789.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,869.61 : 4,303.86 = 789.09 : x
2. Step 2: Convert to fraction form
   2,869.61/4,303.86 = 789.09/x
3. Step 3: Cross multiply
   2,869.61x = 4,303.86 × 789.09
4. Step 4: Simplify right side
   2,869.61x = 3,396,111.37
5. Step 5: Solve for x
   x = 3,396,111.37/2,869.61
6. Step 6: Final answer
   x = 1,183.48