Finding the Fourth Proportional to 1,396.06, 1,926.27 and 806.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.06 : 1,926.27 = 806.56 : x
2. Step 2: Convert to fraction form
   1,396.06/1,926.27 = 806.56/x
3. Step 3: Cross multiply
   1,396.06x = 1,926.27 × 806.56
4. Step 4: Simplify right side
   1,396.06x = 1,553,652.33
5. Step 5: Solve for x
   x = 1,553,652.33/1,396.06
6. Step 6: Final answer
   x = 1,112.88