Finding the Fourth Proportional to 2,641.01, 3,645.41 and 1,645.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.01 : 3,645.41 = 1,645.79 : x
2. Step 2: Convert to fraction form
   2,641.01/3,645.41 = 1,645.79/x
3. Step 3: Cross multiply
   2,641.01x = 3,645.41 × 1,645.79
4. Step 4: Simplify right side
   2,641.01x = 5,999,552.87
5. Step 5: Solve for x
   x = 5,999,552.87/2,641.01
6. Step 6: Final answer
   x = 2,271.69