Finding the Fourth Proportional to 1,721.56, 2,581.72 and 488.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.56 : 2,581.72 = 488.88 : x
2. Step 2: Convert to fraction form
   1,721.56/2,581.72 = 488.88/x
3. Step 3: Cross multiply
   1,721.56x = 2,581.72 × 488.88
4. Step 4: Simplify right side
   1,721.56x = 1,262,151.27
5. Step 5: Solve for x
   x = 1,262,151.27/1,721.56
6. Step 6: Final answer
   x = 733.14