Finding the Fourth Proportional to 1,976.33, 2,728.60 and 1,231.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.33 : 2,728.60 = 1,231.38 : x
2. Step 2: Convert to fraction form
   1,976.33/2,728.60 = 1,231.38/x
3. Step 3: Cross multiply
   1,976.33x = 2,728.60 × 1,231.38
4. Step 4: Simplify right side
   1,976.33x = 3,359,940.39
5. Step 5: Solve for x
   x = 3,359,940.39/1,976.33
6. Step 6: Final answer
   x = 1,700.09