Finding the Fourth Proportional to 1,164.35, 1,606.81 and 660.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.35 : 1,606.81 = 660.29 : x
2. Step 2: Convert to fraction form
   1,164.35/1,606.81 = 660.29/x
3. Step 3: Cross multiply
   1,164.35x = 1,606.81 × 660.29
4. Step 4: Simplify right side
   1,164.35x = 1,060,960.03
5. Step 5: Solve for x
   x = 1,060,960.03/1,164.35
6. Step 6: Final answer
   x = 911.20