Finding the Fourth Proportional to 1,863.50, 2,571.57 and 1,012.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.50 : 2,571.57 = 1,012.73 : x
2. Step 2: Convert to fraction form
   1,863.50/2,571.57 = 1,012.73/x
3. Step 3: Cross multiply
   1,863.50x = 2,571.57 × 1,012.73
4. Step 4: Simplify right side
   1,863.50x = 2,604,293.23
5. Step 5: Solve for x
   x = 2,604,293.23/1,863.50
6. Step 6: Final answer
   x = 1,397.53