Finding the Fourth Proportional to 2,761.95, 4,138.20 and 1,298.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,761.95 : 4,138.20 = 1,298.10 : x
2. Step 2: Convert to fraction form
   2,761.95/4,138.20 = 1,298.10/x
3. Step 3: Cross multiply
   2,761.95x = 4,138.20 × 1,298.10
4. Step 4: Simplify right side
   2,761.95x = 5,371,797.42
5. Step 5: Solve for x
   x = 5,371,797.42/2,761.95
6. Step 6: Final answer
   x = 1,944.93