Finding the Fourth Proportional to 2,087.29, 3,129.46 and 1,046.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.29 : 3,129.46 = 1,046.55 : x
2. Step 2: Convert to fraction form
   2,087.29/3,129.46 = 1,046.55/x
3. Step 3: Cross multiply
   2,087.29x = 3,129.46 × 1,046.55
4. Step 4: Simplify right side
   2,087.29x = 3,275,136.36
5. Step 5: Solve for x
   x = 3,275,136.36/2,087.29
6. Step 6: Final answer
   x = 1,569.09