Finding the Fourth Proportional to 2,579.58, 3,868.56 and 935.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.58 : 3,868.56 = 935.69 : x
2. Step 2: Convert to fraction form
   2,579.58/3,868.56 = 935.69/x
3. Step 3: Cross multiply
   2,579.58x = 3,868.56 × 935.69
4. Step 4: Simplify right side
   2,579.58x = 3,619,753.56
5. Step 5: Solve for x
   x = 3,619,753.56/2,579.58
6. Step 6: Final answer
   x = 1,403.23