Finding the Fourth Proportional to 2,641.80, 3,645.77 and 1,522.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.80 : 3,645.77 = 1,522.65 : x
2. Step 2: Convert to fraction form
   2,641.80/3,645.77 = 1,522.65/x
3. Step 3: Cross multiply
   2,641.80x = 3,645.77 × 1,522.65
4. Step 4: Simplify right side
   2,641.80x = 5,551,231.69
5. Step 5: Solve for x
   x = 5,551,231.69/2,641.80
6. Step 6: Final answer
   x = 2,101.31