Finding the Fourth Proportional to 1,766.71, 2,648.49 and 670.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.71 : 2,648.49 = 670.33 : x
2. Step 2: Convert to fraction form
   1,766.71/2,648.49 = 670.33/x
3. Step 3: Cross multiply
   1,766.71x = 2,648.49 × 670.33
4. Step 4: Simplify right side
   1,766.71x = 1,775,362.30
5. Step 5: Solve for x
   x = 1,775,362.30/1,766.71
6. Step 6: Final answer
   x = 1,004.90