Finding the Fourth Proportional to 2,434.87, 3,651.78 and 769.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,434.87 : 3,651.78 = 769.12 : x
2. Step 2: Convert to fraction form
   2,434.87/3,651.78 = 769.12/x
3. Step 3: Cross multiply
   2,434.87x = 3,651.78 × 769.12
4. Step 4: Simplify right side
   2,434.87x = 2,808,667.75
5. Step 5: Solve for x
   x = 2,808,667.75/2,434.87
6. Step 6: Final answer
   x = 1,153.52