Finding the Fourth Proportional to 1,162.96, 1,604.71 and 665.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.96 : 1,604.71 = 665.52 : x
2. Step 2: Convert to fraction form
   1,162.96/1,604.71 = 665.52/x
3. Step 3: Cross multiply
   1,162.96x = 1,604.71 × 665.52
4. Step 4: Simplify right side
   1,162.96x = 1,067,961.41
5. Step 5: Solve for x
   x = 1,067,961.41/1,162.96
6. Step 6: Final answer
   x = 918.32