Finding the Fourth Proportional to 1,366.73, 1,885.97 and 807.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.73 : 1,885.97 = 807.15 : x
2. Step 2: Convert to fraction form
   1,366.73/1,885.97 = 807.15/x
3. Step 3: Cross multiply
   1,366.73x = 1,885.97 × 807.15
4. Step 4: Simplify right side
   1,366.73x = 1,522,260.69
5. Step 5: Solve for x
   x = 1,522,260.69/1,366.73
6. Step 6: Final answer
   x = 1,113.80