Finding the Fourth Proportional to 2,513.15, 3,769.31 and 664.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.15 : 3,769.31 = 664.38 : x
2. Step 2: Convert to fraction form
   2,513.15/3,769.31 = 664.38/x
3. Step 3: Cross multiply
   2,513.15x = 3,769.31 × 664.38
4. Step 4: Simplify right side
   2,513.15x = 2,504,243.37
5. Step 5: Solve for x
   x = 2,504,243.37/2,513.15
6. Step 6: Final answer
   x = 996.46