Finding the Fourth Proportional to 1,968.42, 2,950.56 and 668.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,968.42 : 2,950.56 = 668.88 : x
2. Step 2: Convert to fraction form
   1,968.42/2,950.56 = 668.88/x
3. Step 3: Cross multiply
   1,968.42x = 2,950.56 × 668.88
4. Step 4: Simplify right side
   1,968.42x = 1,973,570.57
5. Step 5: Solve for x
   x = 1,973,570.57/1,968.42
6. Step 6: Final answer
   x = 1,002.62