Finding the Fourth Proportional to 3,744.72, 5,617.20 and 971.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,744.72 : 5,617.20 = 971.48 : x
2. Step 2: Convert to fraction form
   3,744.72/5,617.20 = 971.48/x
3. Step 3: Cross multiply
   3,744.72x = 5,617.20 × 971.48
4. Step 4: Simplify right side
   3,744.72x = 5,456,997.46
5. Step 5: Solve for x
   x = 5,456,997.46/3,744.72
6. Step 6: Final answer
   x = 1,457.25