Finding the Fourth Proportional to 2,828.83, 4,243.28 and 881.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,828.83 : 4,243.28 = 881.07 : x
2. Step 2: Convert to fraction form
   2,828.83/4,243.28 = 881.07/x
3. Step 3: Cross multiply
   2,828.83x = 4,243.28 × 881.07
4. Step 4: Simplify right side
   2,828.83x = 3,738,622.30
5. Step 5: Solve for x
   x = 3,738,622.30/2,828.83
6. Step 6: Final answer
   x = 1,321.62