Finding the Fourth Proportional to 1,208.31, 1,809.15 and 796.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.31 : 1,809.15 = 796.15 : x
2. Step 2: Convert to fraction form
   1,208.31/1,809.15 = 796.15/x
3. Step 3: Cross multiply
   1,208.31x = 1,809.15 × 796.15
4. Step 4: Simplify right side
   1,208.31x = 1,440,354.77
5. Step 5: Solve for x
   x = 1,440,354.77/1,208.31
6. Step 6: Final answer
   x = 1,192.04