Finding the Fourth Proportional to 2,429.78, 3,644.34 and 969.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.78 : 3,644.34 = 969.95 : x
2. Step 2: Convert to fraction form
   2,429.78/3,644.34 = 969.95/x
3. Step 3: Cross multiply
   2,429.78x = 3,644.34 × 969.95
4. Step 4: Simplify right side
   2,429.78x = 3,534,809.36
5. Step 5: Solve for x
   x = 3,534,809.36/2,429.78
6. Step 6: Final answer
   x = 1,454.79