Finding the Fourth Proportional to 2,169.92, 3,256.72 and 938.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.92 : 3,256.72 = 938.27 : x
2. Step 2: Convert to fraction form
   2,169.92/3,256.72 = 938.27/x
3. Step 3: Cross multiply
   2,169.92x = 3,256.72 × 938.27
4. Step 4: Simplify right side
   2,169.92x = 3,055,688.47
5. Step 5: Solve for x
   x = 3,055,688.47/2,169.92
6. Step 6: Final answer
   x = 1,408.20