Finding the Fourth Proportional to 2,022.92, 3,031.82 and 911.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.92 : 3,031.82 = 911.15 : x
2. Step 2: Convert to fraction form
   2,022.92/3,031.82 = 911.15/x
3. Step 3: Cross multiply
   2,022.92x = 3,031.82 × 911.15
4. Step 4: Simplify right side
   2,022.92x = 2,762,436.58
5. Step 5: Solve for x
   x = 2,762,436.58/2,022.92
6. Step 6: Final answer
   x = 1,365.57