Finding the Fourth Proportional to 2,648.38, 3,972.76 and 893.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.38 : 3,972.76 = 893.38 : x
2. Step 2: Convert to fraction form
   2,648.38/3,972.76 = 893.38/x
3. Step 3: Cross multiply
   2,648.38x = 3,972.76 × 893.38
4. Step 4: Simplify right side
   2,648.38x = 3,549,184.33
5. Step 5: Solve for x
   x = 3,549,184.33/2,648.38
6. Step 6: Final answer
   x = 1,340.13