Finding the Fourth Proportional to 1,076.69, 1,616.61 and 667.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.69 : 1,616.61 = 667.54 : x
2. Step 2: Convert to fraction form
   1,076.69/1,616.61 = 667.54/x
3. Step 3: Cross multiply
   1,076.69x = 1,616.61 × 667.54
4. Step 4: Simplify right side
   1,076.69x = 1,079,152.61
5. Step 5: Solve for x
   x = 1,079,152.61/1,076.69
6. Step 6: Final answer
   x = 1,002.28