Finding the Fourth Proportional to 1,164.68, 1,606.79 and 667.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.68 : 1,606.79 = 667.05 : x
2. Step 2: Convert to fraction form
   1,164.68/1,606.79 = 667.05/x
3. Step 3: Cross multiply
   1,164.68x = 1,606.79 × 667.05
4. Step 4: Simplify right side
   1,164.68x = 1,071,809.27
5. Step 5: Solve for x
   x = 1,071,809.27/1,164.68
6. Step 6: Final answer
   x = 920.26