Finding the Fourth Proportional to 2,401.65, 3,315.79 and 1,646.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.65 : 3,315.79 = 1,646.71 : x
2. Step 2: Convert to fraction form
   2,401.65/3,315.79 = 1,646.71/x
3. Step 3: Cross multiply
   2,401.65x = 3,315.79 × 1,646.71
4. Step 4: Simplify right side
   2,401.65x = 5,460,144.55
5. Step 5: Solve for x
   x = 5,460,144.55/2,401.65
6. Step 6: Final answer
   x = 2,273.50