Finding the Fourth Proportional to 1,766.89, 2,438.42 and 1,020.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.89 : 2,438.42 = 1,020.88 : x
2. Step 2: Convert to fraction form
   1,766.89/2,438.42 = 1,020.88/x
3. Step 3: Cross multiply
   1,766.89x = 2,438.42 × 1,020.88
4. Step 4: Simplify right side
   1,766.89x = 2,489,329.11
5. Step 5: Solve for x
   x = 2,489,329.11/1,766.89
6. Step 6: Final answer
   x = 1,408.88