Finding the Fourth Proportional to 2,191.92, 3,286.86 and 730.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.92 : 3,286.86 = 730.68 : x
2. Step 2: Convert to fraction form
   2,191.92/3,286.86 = 730.68/x
3. Step 3: Cross multiply
   2,191.92x = 3,286.86 × 730.68
4. Step 4: Simplify right side
   2,191.92x = 2,401,642.86
5. Step 5: Solve for x
   x = 2,401,642.86/2,191.92
6. Step 6: Final answer
   x = 1,095.68