Finding the Fourth Proportional to 1,665.78, 2,294.73 and 1,167.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.78 : 2,294.73 = 1,167.45 : x
2. Step 2: Convert to fraction form
   1,665.78/2,294.73 = 1,167.45/x
3. Step 3: Cross multiply
   1,665.78x = 2,294.73 × 1,167.45
4. Step 4: Simplify right side
   1,665.78x = 2,678,982.54
5. Step 5: Solve for x
   x = 2,678,982.54/1,665.78
6. Step 6: Final answer
   x = 1,608.25