Finding the Fourth Proportional to 2,648.39, 3,972.38 and 893.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.39 : 3,972.38 = 893.54 : x
2. Step 2: Convert to fraction form
   2,648.39/3,972.38 = 893.54/x
3. Step 3: Cross multiply
   2,648.39x = 3,972.38 × 893.54
4. Step 4: Simplify right side
   2,648.39x = 3,549,456.10
5. Step 5: Solve for x
   x = 3,549,456.10/2,648.39
6. Step 6: Final answer
   x = 1,340.23