Finding the Fourth Proportional to 2,192.42, 3,288.93 and 805.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,192.42 : 3,288.93 = 805.43 : x
2. Step 2: Convert to fraction form
   2,192.42/3,288.93 = 805.43/x
3. Step 3: Cross multiply
   2,192.42x = 3,288.93 × 805.43
4. Step 4: Simplify right side
   2,192.42x = 2,649,002.89
5. Step 5: Solve for x
   x = 2,649,002.89/2,192.42
6. Step 6: Final answer
   x = 1,208.26