Finding the Fourth Proportional to 2,740.02, 4,111.38 and 1,278.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.02 : 4,111.38 = 1,278.96 : x
2. Step 2: Convert to fraction form
   2,740.02/4,111.38 = 1,278.96/x
3. Step 3: Cross multiply
   2,740.02x = 4,111.38 × 1,278.96
4. Step 4: Simplify right side
   2,740.02x = 5,258,290.56
5. Step 5: Solve for x
   x = 5,258,290.56/2,740.02
6. Step 6: Final answer
   x = 1,919.07