Finding the Fourth Proportional to 2,287.37, 3,428.88 and 900.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.37 : 3,428.88 = 900.25 : x
2. Step 2: Convert to fraction form
   2,287.37/3,428.88 = 900.25/x
3. Step 3: Cross multiply
   2,287.37x = 3,428.88 × 900.25
4. Step 4: Simplify right side
   2,287.37x = 3,086,837.27
5. Step 5: Solve for x
   x = 3,086,837.27/2,287.37
6. Step 6: Final answer
   x = 1,349.51