Finding the Fourth Proportional to 2,457.18, 3,687.39 and 1,974.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.18 : 3,687.39 = 1,974.42 : x
2. Step 2: Convert to fraction form
   2,457.18/3,687.39 = 1,974.42/x
3. Step 3: Cross multiply
   2,457.18x = 3,687.39 × 1,974.42
4. Step 4: Simplify right side
   2,457.18x = 7,280,456.56
5. Step 5: Solve for x
   x = 7,280,456.56/2,457.18
6. Step 6: Final answer
   x = 2,962.93