Finding the Fourth Proportional to 1,446.42, 2,168.82 and 579.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.42 : 2,168.82 = 579.72 : x
2. Step 2: Convert to fraction form
   1,446.42/2,168.82 = 579.72/x
3. Step 3: Cross multiply
   1,446.42x = 2,168.82 × 579.72
4. Step 4: Simplify right side
   1,446.42x = 1,257,308.33
5. Step 5: Solve for x
   x = 1,257,308.33/1,446.42
6. Step 6: Final answer
   x = 869.26