Finding the Fourth Proportional to 2,459.42, 3,689.79 and 1,072.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.42 : 3,689.79 = 1,072.87 : x
2. Step 2: Convert to fraction form
   2,459.42/3,689.79 = 1,072.87/x
3. Step 3: Cross multiply
   2,459.42x = 3,689.79 × 1,072.87
4. Step 4: Simplify right side
   2,459.42x = 3,958,665.00
5. Step 5: Solve for x
   x = 3,958,665.00/2,459.42
6. Step 6: Final answer
   x = 1,609.59