Finding the Fourth Proportional to 2,078.94, 3,119.15 and 1,298.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.94 : 3,119.15 = 1,298.03 : x
2. Step 2: Convert to fraction form
   2,078.94/3,119.15 = 1,298.03/x
3. Step 3: Cross multiply
   2,078.94x = 3,119.15 × 1,298.03
4. Step 4: Simplify right side
   2,078.94x = 4,048,757.43
5. Step 5: Solve for x
   x = 4,048,757.43/2,078.94
6. Step 6: Final answer
   x = 1,947.51