Finding the Fourth Proportional to 2,640.80, 3,645.02 and 1,522.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.80 : 3,645.02 = 1,522.10 : x
2. Step 2: Convert to fraction form
   2,640.80/3,645.02 = 1,522.10/x
3. Step 3: Cross multiply
   2,640.80x = 3,645.02 × 1,522.10
4. Step 4: Simplify right side
   2,640.80x = 5,548,084.94
5. Step 5: Solve for x
   x = 5,548,084.94/2,640.80
6. Step 6: Final answer
   x = 2,100.91