Finding the Fourth Proportional to 2,427.16, 3,640.71 and 1,605.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.16 : 3,640.71 = 1,605.22 : x
2. Step 2: Convert to fraction form
   2,427.16/3,640.71 = 1,605.22/x
3. Step 3: Cross multiply
   2,427.16x = 3,640.71 × 1,605.22
4. Step 4: Simplify right side
   2,427.16x = 5,844,140.51
5. Step 5: Solve for x
   x = 5,844,140.51/2,427.16
6. Step 6: Final answer
   x = 2,407.81