Finding the Fourth Proportional to 2,759.05, 4,139.52 and 1,298.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,759.05 : 4,139.52 = 1,298.28 : x
2. Step 2: Convert to fraction form
   2,759.05/4,139.52 = 1,298.28/x
3. Step 3: Cross multiply
   2,759.05x = 4,139.52 × 1,298.28
4. Step 4: Simplify right side
   2,759.05x = 5,374,256.03
5. Step 5: Solve for x
   x = 5,374,256.03/2,759.05
6. Step 6: Final answer
   x = 1,947.86