Finding the Fourth Proportional to 2,640.27, 3,641.94 and 1,577.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.27 : 3,641.94 = 1,577.34 : x
2. Step 2: Convert to fraction form
   2,640.27/3,641.94 = 1,577.34/x
3. Step 3: Cross multiply
   2,640.27x = 3,641.94 × 1,577.34
4. Step 4: Simplify right side
   2,640.27x = 5,744,577.64
5. Step 5: Solve for x
   x = 5,744,577.64/2,640.27
6. Step 6: Final answer
   x = 2,175.75