Finding the Fourth Proportional to 1,164.57, 1,607.25 and 667.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.57 : 1,607.25 = 667.32 : x
2. Step 2: Convert to fraction form
   1,164.57/1,607.25 = 667.32/x
3. Step 3: Cross multiply
   1,164.57x = 1,607.25 × 667.32
4. Step 4: Simplify right side
   1,164.57x = 1,072,550.07
5. Step 5: Solve for x
   x = 1,072,550.07/1,164.57
6. Step 6: Final answer
   x = 920.98