Finding the Fourth Proportional to 2,287.49, 3,429.53 and 900.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.49 : 3,429.53 = 900.09 : x
2. Step 2: Convert to fraction form
   2,287.49/3,429.53 = 900.09/x
3. Step 3: Cross multiply
   2,287.49x = 3,429.53 × 900.09
4. Step 4: Simplify right side
   2,287.49x = 3,086,881.16
5. Step 5: Solve for x
   x = 3,086,881.16/2,287.49
6. Step 6: Final answer
   x = 1,349.47