Finding the Fourth Proportional to 1,164.42, 1,607.02 and 667.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.42 : 1,607.02 = 667.13 : x
2. Step 2: Convert to fraction form
   1,164.42/1,607.02 = 667.13/x
3. Step 3: Cross multiply
   1,164.42x = 1,607.02 × 667.13
4. Step 4: Simplify right side
   1,164.42x = 1,072,081.55
5. Step 5: Solve for x
   x = 1,072,081.55/1,164.42
6. Step 6: Final answer
   x = 920.70