Finding the Fourth Proportional to 1,764.72, 2,646.77 and 668.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.72 : 2,646.77 = 668.73 : x
2. Step 2: Convert to fraction form
   1,764.72/2,646.77 = 668.73/x
3. Step 3: Cross multiply
   1,764.72x = 2,646.77 × 668.73
4. Step 4: Simplify right side
   1,764.72x = 1,769,961.23
5. Step 5: Solve for x
   x = 1,769,961.23/1,764.72
6. Step 6: Final answer
   x = 1,002.97