Finding the Fourth Proportional to 1,965.69, 2,948.58 and 667.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.69 : 2,948.58 = 667.15 : x
2. Step 2: Convert to fraction form
   1,965.69/2,948.58 = 667.15/x
3. Step 3: Cross multiply
   1,965.69x = 2,948.58 × 667.15
4. Step 4: Simplify right side
   1,965.69x = 1,967,137.78
5. Step 5: Solve for x
   x = 1,967,137.78/1,965.69
6. Step 6: Final answer
   x = 1,000.74