Finding the Fourth Proportional to 1,766.42, 2,437.83 and 980.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.42 : 2,437.83 = 980.66 : x
2. Step 2: Convert to fraction form
   1,766.42/2,437.83 = 980.66/x
3. Step 3: Cross multiply
   1,766.42x = 2,437.83 × 980.66
4. Step 4: Simplify right side
   1,766.42x = 2,390,682.37
5. Step 5: Solve for x
   x = 2,390,682.37/1,766.42
6. Step 6: Final answer
   x = 1,353.41