Finding the Fourth Proportional to 1,766.89, 2,438.30 and 980.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.89 : 2,438.30 = 980.94 : x
2. Step 2: Convert to fraction form
   1,766.89/2,438.30 = 980.94/x
3. Step 3: Cross multiply
   1,766.89x = 2,438.30 × 980.94
4. Step 4: Simplify right side
   1,766.89x = 2,391,823.88
5. Step 5: Solve for x
   x = 2,391,823.88/1,766.89
6. Step 6: Final answer
   x = 1,353.69