Finding the Fourth Proportional to 2,429.25, 3,644.15 and 890.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.25 : 3,644.15 = 890.25 : x
2. Step 2: Convert to fraction form
   2,429.25/3,644.15 = 890.25/x
3. Step 3: Cross multiply
   2,429.25x = 3,644.15 × 890.25
4. Step 4: Simplify right side
   2,429.25x = 3,244,200.09
5. Step 5: Solve for x
   x = 3,244,200.09/2,429.25
6. Step 6: Final answer
   x = 1,335.47