Finding the Fourth Proportional to 1,674.50, 2,495.97 and 1,621.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,674.50 : 2,495.97 = 1,621.43 : x
2. Step 2: Convert to fraction form
   1,674.50/2,495.97 = 1,621.43/x
3. Step 3: Cross multiply
   1,674.50x = 2,495.97 × 1,621.43
4. Step 4: Simplify right side
   1,674.50x = 4,047,028.16
5. Step 5: Solve for x
   x = 4,047,028.16/1,674.50
6. Step 6: Final answer
   x = 2,416.86