Finding the Fourth Proportional to 1,162.23, 1,604.01 and 664.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.23 : 1,604.01 = 664.93 : x
2. Step 2: Convert to fraction form
   1,162.23/1,604.01 = 664.93/x
3. Step 3: Cross multiply
   1,162.23x = 1,604.01 × 664.93
4. Step 4: Simplify right side
   1,162.23x = 1,066,554.37
5. Step 5: Solve for x
   x = 1,066,554.37/1,162.23
6. Step 6: Final answer
   x = 917.68