Finding the Fourth Proportional to 1,609.96, 2,411.86 and 1,087.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.96 : 2,411.86 = 1,087.39 : x
2. Step 2: Convert to fraction form
   1,609.96/2,411.86 = 1,087.39/x
3. Step 3: Cross multiply
   1,609.96x = 2,411.86 × 1,087.39
4. Step 4: Simplify right side
   1,609.96x = 2,622,632.45
5. Step 5: Solve for x
   x = 2,622,632.45/1,609.96
6. Step 6: Final answer
   x = 1,629.00