Finding the Fourth Proportional to 2,479.83, 3,422.84 and 1,535.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.83 : 3,422.84 = 1,535.78 : x
2. Step 2: Convert to fraction form
   2,479.83/3,422.84 = 1,535.78/x
3. Step 3: Cross multiply
   2,479.83x = 3,422.84 × 1,535.78
4. Step 4: Simplify right side
   2,479.83x = 5,256,704.42
5. Step 5: Solve for x
   x = 5,256,704.42/2,479.83
6. Step 6: Final answer
   x = 2,119.78