Finding the Fourth Proportional to 2,758,697.78, 4,138,642.27 and 839,759.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758,697.78 : 4,138,642.27 = 839,759.05 : x
2. Step 2: Convert to fraction form
   2,758,697.78/4,138,642.27 = 839,759.05/x
3. Step 3: Cross multiply
   2,758,697.78x = 4,138,642.27 × 839,759.05
4. Step 4: Simplify right side
   2,758,697.78x = 3,475,462,286,250.01
5. Step 5: Solve for x
   x = 3,475,462,286,250.01/2,758,697.78
6. Step 6: Final answer
   x = 1,259,819.87