Finding the Fourth Proportional to 1,368.27, 1,888.16 and 808.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.27 : 1,888.16 = 808.79 : x
2. Step 2: Convert to fraction form
   1,368.27/1,888.16 = 808.79/x
3. Step 3: Cross multiply
   1,368.27x = 1,888.16 × 808.79
4. Step 4: Simplify right side
   1,368.27x = 1,527,111.44
5. Step 5: Solve for x
   x = 1,527,111.44/1,368.27
6. Step 6: Final answer
   x = 1,116.09