Finding the Fourth Proportional to 2,648.57, 3,972.22 and 1,005.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.57 : 3,972.22 = 1,005.89 : x
2. Step 2: Convert to fraction form
   2,648.57/3,972.22 = 1,005.89/x
3. Step 3: Cross multiply
   2,648.57x = 3,972.22 × 1,005.89
4. Step 4: Simplify right side
   2,648.57x = 3,995,594.00
5. Step 5: Solve for x
   x = 3,995,594.00/2,648.57
6. Step 6: Final answer
   x = 1,508.59