Finding the Fourth Proportional to 2,641.79, 3,644.84 and 1,522.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.79 : 3,644.84 = 1,522.57 : x
2. Step 2: Convert to fraction form
   2,641.79/3,644.84 = 1,522.57/x
3. Step 3: Cross multiply
   2,641.79x = 3,644.84 × 1,522.57
4. Step 4: Simplify right side
   2,641.79x = 5,549,520.23
5. Step 5: Solve for x
   x = 5,549,520.23/2,641.79
6. Step 6: Final answer
   x = 2,100.67