Finding the Fourth Proportional to 1,648.04, 2,470.72 and 722.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.04 : 2,470.72 = 722.89 : x
2. Step 2: Convert to fraction form
   1,648.04/2,470.72 = 722.89/x
3. Step 3: Cross multiply
   1,648.04x = 2,470.72 × 722.89
4. Step 4: Simplify right side
   1,648.04x = 1,786,058.78
5. Step 5: Solve for x
   x = 1,786,058.78/1,648.04
6. Step 6: Final answer
   x = 1,083.75