Finding the Fourth Proportional to 2,648.08, 3,972.78 and 1,004.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.08 : 3,972.78 = 1,004.62 : x
2. Step 2: Convert to fraction form
   2,648.08/3,972.78 = 1,004.62/x
3. Step 3: Cross multiply
   2,648.08x = 3,972.78 × 1,004.62
4. Step 4: Simplify right side
   2,648.08x = 3,991,134.24
5. Step 5: Solve for x
   x = 3,991,134.24/2,648.08
6. Step 6: Final answer
   x = 1,507.18