Finding the Fourth Proportional to 1,648.22, 2,471.92 and 724.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.22 : 2,471.92 = 724.01 : x
2. Step 2: Convert to fraction form
   1,648.22/2,471.92 = 724.01/x
3. Step 3: Cross multiply
   1,648.22x = 2,471.92 × 724.01
4. Step 4: Simplify right side
   1,648.22x = 1,789,680.63
5. Step 5: Solve for x
   x = 1,789,680.63/1,648.22
6. Step 6: Final answer
   x = 1,085.83