Finding the Fourth Proportional to 1,647.55, 2,273.67 and 939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.55 : 2,273.67 = 939.50 : x
2. Step 2: Convert to fraction form
   1,647.55/2,273.67 = 939.50/x
3. Step 3: Cross multiply
   1,647.55x = 2,273.67 × 939.50
4. Step 4: Simplify right side
   1,647.55x = 2,136,103.73
5. Step 5: Solve for x
   x = 2,136,103.73/1,647.55
6. Step 6: Final answer
   x = 1,296.54