Finding the Fourth Proportional to 2,285.25, 3,429.82 and 899.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.25 : 3,429.82 = 899.55 : x
2. Step 2: Convert to fraction form
   2,285.25/3,429.82 = 899.55/x
3. Step 3: Cross multiply
   2,285.25x = 3,429.82 × 899.55
4. Step 4: Simplify right side
   2,285.25x = 3,085,294.58
5. Step 5: Solve for x
   x = 3,085,294.58/2,285.25
6. Step 6: Final answer
   x = 1,350.09