Finding the Fourth Proportional to 1,648.35, 2,473.38 and 724.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.35 : 2,473.38 = 724.56 : x
2. Step 2: Convert to fraction form
   1,648.35/2,473.38 = 724.56/x
3. Step 3: Cross multiply
   1,648.35x = 2,473.38 × 724.56
4. Step 4: Simplify right side
   1,648.35x = 1,792,096.22
5. Step 5: Solve for x
   x = 1,792,096.22/1,648.35
6. Step 6: Final answer
   x = 1,087.21