Finding the Fourth Proportional to 1,766.79, 2,438.15 and 980.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.79 : 2,438.15 = 980.82 : x
2. Step 2: Convert to fraction form
   1,766.79/2,438.15 = 980.82/x
3. Step 3: Cross multiply
   1,766.79x = 2,438.15 × 980.82
4. Step 4: Simplify right side
   1,766.79x = 2,391,381.38
5. Step 5: Solve for x
   x = 2,391,381.38/1,766.79
6. Step 6: Final answer
   x = 1,353.52