Finding the Fourth Proportional to 3,219.42, 4,815.78 and 3,022.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,219.42 : 4,815.78 = 3,022.59 : x
2. Step 2: Convert to fraction form
   3,219.42/4,815.78 = 3,022.59/x
3. Step 3: Cross multiply
   3,219.42x = 4,815.78 × 3,022.59
4. Step 4: Simplify right side
   3,219.42x = 14,556,128.47
5. Step 5: Solve for x
   x = 14,556,128.47/3,219.42
6. Step 6: Final answer
   x = 4,521.35