Finding the Fourth Proportional to 2,778.08, 4,168.16 and 1,298.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778.08 : 4,168.16 = 1,298.14 : x
2. Step 2: Convert to fraction form
   2,778.08/4,168.16 = 1,298.14/x
3. Step 3: Cross multiply
   2,778.08x = 4,168.16 × 1,298.14
4. Step 4: Simplify right side
   2,778.08x = 5,410,853.94
5. Step 5: Solve for x
   x = 5,410,853.94/2,778.08
6. Step 6: Final answer
   x = 1,947.69