Finding the Fourth Proportional to 1,162.72, 1,605.30 and 808.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.72 : 1,605.30 = 808.52 : x
2. Step 2: Convert to fraction form
   1,162.72/1,605.30 = 808.52/x
3. Step 3: Cross multiply
   1,162.72x = 1,605.30 × 808.52
4. Step 4: Simplify right side
   1,162.72x = 1,297,917.16
5. Step 5: Solve for x
   x = 1,297,917.16/1,162.72
6. Step 6: Final answer
   x = 1,116.28