Finding the Fourth Proportional to 2,644.72, 3,968.72 and 914.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.72 : 3,968.72 = 914.56 : x
2. Step 2: Convert to fraction form
   2,644.72/3,968.72 = 914.56/x
3. Step 3: Cross multiply
   2,644.72x = 3,968.72 × 914.56
4. Step 4: Simplify right side
   2,644.72x = 3,629,632.56
5. Step 5: Solve for x
   x = 3,629,632.56/2,644.72
6. Step 6: Final answer
   x = 1,372.41