Finding the Fourth Proportional to 2,072.28, 3,109.25 and 976.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.28 : 3,109.25 = 976.73 : x
2. Step 2: Convert to fraction form
   2,072.28/3,109.25 = 976.73/x
3. Step 3: Cross multiply
   2,072.28x = 3,109.25 × 976.73
4. Step 4: Simplify right side
   2,072.28x = 3,036,884.65
5. Step 5: Solve for x
   x = 3,036,884.65/2,072.28
6. Step 6: Final answer
   x = 1,465.48