Finding the Fourth Proportional to 2,579.78, 3,560.04 and 1,400.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.78 : 3,560.04 = 1,400.84 : x
2. Step 2: Convert to fraction form
   2,579.78/3,560.04 = 1,400.84/x
3. Step 3: Cross multiply
   2,579.78x = 3,560.04 × 1,400.84
4. Step 4: Simplify right side
   2,579.78x = 4,987,046.43
5. Step 5: Solve for x
   x = 4,987,046.43/2,579.78
6. Step 6: Final answer
   x = 1,933.13