Finding the Fourth Proportional to 2,641.43, 3,644.79 and 1,522.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.43 : 3,644.79 = 1,522.20 : x
2. Step 2: Convert to fraction form
   2,641.43/3,644.79 = 1,522.20/x
3. Step 3: Cross multiply
   2,641.43x = 3,644.79 × 1,522.20
4. Step 4: Simplify right side
   2,641.43x = 5,548,099.34
5. Step 5: Solve for x
   x = 5,548,099.34/2,641.43
6. Step 6: Final answer
   x = 2,100.42