Finding the Fourth Proportional to 931.92, 1,282.82 and 805.82

Step by Step Solution

1. Step 1: Write the proportion equation
   931.92 : 1,282.82 = 805.82 : x
2. Step 2: Convert to fraction form
   931.92/1,282.82 = 805.82/x
3. Step 3: Cross multiply
   931.92x = 1,282.82 × 805.82
4. Step 4: Simplify right side
   931.92x = 1,033,722.01
5. Step 5: Solve for x
   x = 1,033,722.01/931.92
6. Step 6: Final answer
   x = 1,109.24