Finding the Fourth Proportional to 1,366.16, 1,885.32 and 806.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.16 : 1,885.32 = 806.96 : x
2. Step 2: Convert to fraction form
   1,366.16/1,885.32 = 806.96/x
3. Step 3: Cross multiply
   1,366.16x = 1,885.32 × 806.96
4. Step 4: Simplify right side
   1,366.16x = 1,521,377.83
5. Step 5: Solve for x
   x = 1,521,377.83/1,366.16
6. Step 6: Final answer
   x = 1,113.62