Finding the Fourth Proportional to 1,965.72, 2,948.96 and 667.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.72 : 2,948.96 = 667.16 : x
2. Step 2: Convert to fraction form
   1,965.72/2,948.96 = 667.16/x
3. Step 3: Cross multiply
   1,965.72x = 2,948.96 × 667.16
4. Step 4: Simplify right side
   1,965.72x = 1,967,428.15
5. Step 5: Solve for x
   x = 1,967,428.15/1,965.72
6. Step 6: Final answer
   x = 1,000.87