Finding the Fourth Proportional to 2,106.52, 3,157.94 and 789.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.52 : 3,157.94 = 789.38 : x
2. Step 2: Convert to fraction form
   2,106.52/3,157.94 = 789.38/x
3. Step 3: Cross multiply
   2,106.52x = 3,157.94 × 789.38
4. Step 4: Simplify right side
   2,106.52x = 2,492,814.68
5. Step 5: Solve for x
   x = 2,492,814.68/2,106.52
6. Step 6: Final answer
   x = 1,183.38