Finding the Fourth Proportional to 3,859.57, 5,790.27 and 1,262.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.57 : 5,790.27 = 1,262.50 : x
2. Step 2: Convert to fraction form
   3,859.57/5,790.27 = 1,262.50/x
3. Step 3: Cross multiply
   3,859.57x = 5,790.27 × 1,262.50
4. Step 4: Simplify right side
   3,859.57x = 7,310,215.88
5. Step 5: Solve for x
   x = 7,310,215.88/3,859.57
6. Step 6: Final answer
   x = 1,894.05