Finding the Fourth Proportional to 1,162.68, 1,604.61 and 665.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.68 : 1,604.61 = 665.34 : x
2. Step 2: Convert to fraction form
   1,162.68/1,604.61 = 665.34/x
3. Step 3: Cross multiply
   1,162.68x = 1,604.61 × 665.34
4. Step 4: Simplify right side
   1,162.68x = 1,067,611.22
5. Step 5: Solve for x
   x = 1,067,611.22/1,162.68
6. Step 6: Final answer
   x = 918.23