Finding the Fourth Proportional to 2,429.28, 3,644.28 and 969.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.28 : 3,644.28 = 969.12 : x
2. Step 2: Convert to fraction form
   2,429.28/3,644.28 = 969.12/x
3. Step 3: Cross multiply
   2,429.28x = 3,644.28 × 969.12
4. Step 4: Simplify right side
   2,429.28x = 3,531,744.63
5. Step 5: Solve for x
   x = 3,531,744.63/2,429.28
6. Step 6: Final answer
   x = 1,453.82