Finding the Fourth Proportional to 2,420.81, 3,626.45 and 1,596.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,420.81 : 3,626.45 = 1,596.57 : x
2. Step 2: Convert to fraction form
   2,420.81/3,626.45 = 1,596.57/x
3. Step 3: Cross multiply
   2,420.81x = 3,626.45 × 1,596.57
4. Step 4: Simplify right side
   2,420.81x = 5,789,867.14
5. Step 5: Solve for x
   x = 5,789,867.14/2,420.81
6. Step 6: Final answer
   x = 2,391.71