Finding the Fourth Proportional to 2,429.97, 3,644.55 and 786.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.97 : 3,644.55 = 786.28 : x
2. Step 2: Convert to fraction form
   2,429.97/3,644.55 = 786.28/x
3. Step 3: Cross multiply
   2,429.97x = 3,644.55 × 786.28
4. Step 4: Simplify right side
   2,429.97x = 2,865,627.66
5. Step 5: Solve for x
   x = 2,865,627.66/2,429.97
6. Step 6: Final answer
   x = 1,179.29