Finding the Fourth Proportional to 1,647.27, 2,273.27 and 985.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.27 : 2,273.27 = 985.05 : x
2. Step 2: Convert to fraction form
   1,647.27/2,273.27 = 985.05/x
3. Step 3: Cross multiply
   1,647.27x = 2,273.27 × 985.05
4. Step 4: Simplify right side
   1,647.27x = 2,239,279.69
5. Step 5: Solve for x
   x = 2,239,279.69/1,647.27
6. Step 6: Final answer
   x = 1,359.39