Finding the Fourth Proportional to 1,938.78, 2,674.04 and 1,342.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.78 : 2,674.04 = 1,342.27 : x
2. Step 2: Convert to fraction form
   1,938.78/2,674.04 = 1,342.27/x
3. Step 3: Cross multiply
   1,938.78x = 2,674.04 × 1,342.27
4. Step 4: Simplify right side
   1,938.78x = 3,589,280.34
5. Step 5: Solve for x
   x = 3,589,280.34/1,938.78
6. Step 6: Final answer
   x = 1,851.31