Finding the Fourth Proportional to 970.72, 1,456.72 and 483.68

Step by Step Solution

1. Step 1: Write the proportion equation
   970.72 : 1,456.72 = 483.68 : x
2. Step 2: Convert to fraction form
   970.72/1,456.72 = 483.68/x
3. Step 3: Cross multiply
   970.72x = 1,456.72 × 483.68
4. Step 4: Simplify right side
   970.72x = 704,586.33
5. Step 5: Solve for x
   x = 704,586.33/970.72
6. Step 6: Final answer
   x = 725.84