Finding the Fourth Proportional to 1,207.72, 1,667.94 and 1,164.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207.72 : 1,667.94 = 1,164.52 : x
2. Step 2: Convert to fraction form
   1,207.72/1,667.94 = 1,164.52/x
3. Step 3: Cross multiply
   1,207.72x = 1,667.94 × 1,164.52
4. Step 4: Simplify right side
   1,207.72x = 1,942,349.49
5. Step 5: Solve for x
   x = 1,942,349.49/1,207.72
6. Step 6: Final answer
   x = 1,608.28