Finding the Fourth Proportional to 2,459.43, 3,686.49 and 1,210.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.43 : 3,686.49 = 1,210.89 : x
2. Step 2: Convert to fraction form
   2,459.43/3,686.49 = 1,210.89/x
3. Step 3: Cross multiply
   2,459.43x = 3,686.49 × 1,210.89
4. Step 4: Simplify right side
   2,459.43x = 4,463,933.88
5. Step 5: Solve for x
   x = 4,463,933.88/2,459.43
6. Step 6: Final answer
   x = 1,815.03