Finding the Fourth Proportional to 2,459.98, 3,689.94 and 816.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.98 : 3,689.94 = 816.46 : x
2. Step 2: Convert to fraction form
   2,459.98/3,689.94 = 816.46/x
3. Step 3: Cross multiply
   2,459.98x = 3,689.94 × 816.46
4. Step 4: Simplify right side
   2,459.98x = 3,012,688.41
5. Step 5: Solve for x
   x = 3,012,688.41/2,459.98
6. Step 6: Final answer
   x = 1,224.68