Finding the Fourth Proportional to 2,664.28, 3,993.72 and 1,102.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.28 : 3,993.72 = 1,102.12 : x
2. Step 2: Convert to fraction form
   2,664.28/3,993.72 = 1,102.12/x
3. Step 3: Cross multiply
   2,664.28x = 3,993.72 × 1,102.12
4. Step 4: Simplify right side
   2,664.28x = 4,401,558.69
5. Step 5: Solve for x
   x = 4,401,558.69/2,664.28
6. Step 6: Final answer
   x = 1,652.07