Finding the Fourth Proportional to 2,622.29, 3,933.33 and 890.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.29 : 3,933.33 = 890.91 : x
2. Step 2: Convert to fraction form
   2,622.29/3,933.33 = 890.91/x
3. Step 3: Cross multiply
   2,622.29x = 3,933.33 × 890.91
4. Step 4: Simplify right side
   2,622.29x = 3,504,243.03
5. Step 5: Solve for x
   x = 3,504,243.03/2,622.29
6. Step 6: Final answer
   x = 1,336.33