Finding the Fourth Proportional to 1,227.98, 1,694.85 and 807.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.98 : 1,694.85 = 807.59 : x
2. Step 2: Convert to fraction form
   1,227.98/1,694.85 = 807.59/x
3. Step 3: Cross multiply
   1,227.98x = 1,694.85 × 807.59
4. Step 4: Simplify right side
   1,227.98x = 1,368,743.91
5. Step 5: Solve for x
   x = 1,368,743.91/1,227.98
6. Step 6: Final answer
   x = 1,114.63