Finding the Fourth Proportional to 2,648.27, 3,972.24 and 893.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.27 : 3,972.24 = 893.20 : x
2. Step 2: Convert to fraction form
   2,648.27/3,972.24 = 893.20/x
3. Step 3: Cross multiply
   2,648.27x = 3,972.24 × 893.20
4. Step 4: Simplify right side
   2,648.27x = 3,548,004.77
5. Step 5: Solve for x
   x = 3,548,004.77/2,648.27
6. Step 6: Final answer
   x = 1,339.74