Finding the Fourth Proportional to 1,162.42, 1,604.07 and 665.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.42 : 1,604.07 = 665.02 : x
2. Step 2: Convert to fraction form
   1,162.42/1,604.07 = 665.02/x
3. Step 3: Cross multiply
   1,162.42x = 1,604.07 × 665.02
4. Step 4: Simplify right side
   1,162.42x = 1,066,738.63
5. Step 5: Solve for x
   x = 1,066,738.63/1,162.42
6. Step 6: Final answer
   x = 917.69