Finding the Fourth Proportional to 2,648.65, 3,968.87 and 1,004.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.65 : 3,968.87 = 1,004.30 : x
2. Step 2: Convert to fraction form
   2,648.65/3,968.87 = 1,004.30/x
3. Step 3: Cross multiply
   2,648.65x = 3,968.87 × 1,004.30
4. Step 4: Simplify right side
   2,648.65x = 3,985,936.14
5. Step 5: Solve for x
   x = 3,985,936.14/2,648.65
6. Step 6: Final answer
   x = 1,504.89