Finding the Fourth Proportional to 2,628.10, 3,942.24 and 896.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.10 : 3,942.24 = 896.50 : x
2. Step 2: Convert to fraction form
   2,628.10/3,942.24 = 896.50/x
3. Step 3: Cross multiply
   2,628.10x = 3,942.24 × 896.50
4. Step 4: Simplify right side
   2,628.10x = 3,534,218.16
5. Step 5: Solve for x
   x = 3,534,218.16/2,628.10
6. Step 6: Final answer
   x = 1,344.78