Finding the Fourth Proportional to 2,612.62, 3,919.34 and 969.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.62 : 3,919.34 = 969.40 : x
2. Step 2: Convert to fraction form
   2,612.62/3,919.34 = 969.40/x
3. Step 3: Cross multiply
   2,612.62x = 3,919.34 × 969.40
4. Step 4: Simplify right side
   2,612.62x = 3,799,408.20
5. Step 5: Solve for x
   x = 3,799,408.20/2,612.62
6. Step 6: Final answer
   x = 1,454.25