Finding the Fourth Proportional to 1,978.73, 2,729.46 and 1,306.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.73 : 2,729.46 = 1,306.54 : x
2. Step 2: Convert to fraction form
   1,978.73/2,729.46 = 1,306.54/x
3. Step 3: Cross multiply
   1,978.73x = 2,729.46 × 1,306.54
4. Step 4: Simplify right side
   1,978.73x = 3,566,158.42
5. Step 5: Solve for x
   x = 3,566,158.42/1,978.73
6. Step 6: Final answer
   x = 1,802.24