Finding the Fourth Proportional to 1,965.57, 2,948.56 and 667.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.57 : 2,948.56 = 667.14 : x
2. Step 2: Convert to fraction form
   1,965.57/2,948.56 = 667.14/x
3. Step 3: Cross multiply
   1,965.57x = 2,948.56 × 667.14
4. Step 4: Simplify right side
   1,965.57x = 1,967,100.65
5. Step 5: Solve for x
   x = 1,967,100.65/1,965.57
6. Step 6: Final answer
   x = 1,000.78