Finding the Fourth Proportional to 1,938.78, 2,905.56 and 962.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.78 : 2,905.56 = 962.73 : x
2. Step 2: Convert to fraction form
   1,938.78/2,905.56 = 962.73/x
3. Step 3: Cross multiply
   1,938.78x = 2,905.56 × 962.73
4. Step 4: Simplify right side
   1,938.78x = 2,797,269.78
5. Step 5: Solve for x
   x = 2,797,269.78/1,938.78
6. Step 6: Final answer
   x = 1,442.80