Finding the Fourth Proportional to 2,287.71, 3,429.88 and 900.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.71 : 3,429.88 = 900.35 : x
2. Step 2: Convert to fraction form
   2,287.71/3,429.88 = 900.35/x
3. Step 3: Cross multiply
   2,287.71x = 3,429.88 × 900.35
4. Step 4: Simplify right side
   2,287.71x = 3,088,085.92
5. Step 5: Solve for x
   x = 3,088,085.92/2,287.71
6. Step 6: Final answer
   x = 1,349.86