Finding the Fourth Proportional to 2,268.15, 3,401.35 and 881.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,268.15 : 3,401.35 = 881.31 : x
2. Step 2: Convert to fraction form
   2,268.15/3,401.35 = 881.31/x
3. Step 3: Cross multiply
   2,268.15x = 3,401.35 × 881.31
4. Step 4: Simplify right side
   2,268.15x = 2,997,633.22
5. Step 5: Solve for x
   x = 2,997,633.22/2,268.15
6. Step 6: Final answer
   x = 1,321.62