Finding the Fourth Proportional to 1,366.47, 1,885.82 and 806.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.47 : 1,885.82 = 806.79 : x
2. Step 2: Convert to fraction form
   1,366.47/1,885.82 = 806.79/x
3. Step 3: Cross multiply
   1,366.47x = 1,885.82 × 806.79
4. Step 4: Simplify right side
   1,366.47x = 1,521,460.72
5. Step 5: Solve for x
   x = 1,521,460.72/1,366.47
6. Step 6: Final answer
   x = 1,113.42