Finding the Fourth Proportional to 2,648.16, 3,972.48 and 1,350.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.16 : 3,972.48 = 1,350.72 : x
2. Step 2: Convert to fraction form
   2,648.16/3,972.48 = 1,350.72/x
3. Step 3: Cross multiply
   2,648.16x = 3,972.48 × 1,350.72
4. Step 4: Simplify right side
   2,648.16x = 5,365,708.19
5. Step 5: Solve for x
   x = 5,365,708.19/2,648.16
6. Step 6: Final answer
   x = 2,026.20