Finding the Fourth Proportional to 2,503.05, 3,754.55 and 859.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.05 : 3,754.55 = 859.71 : x
2. Step 2: Convert to fraction form
   2,503.05/3,754.55 = 859.71/x
3. Step 3: Cross multiply
   2,503.05x = 3,754.55 × 859.71
4. Step 4: Simplify right side
   2,503.05x = 3,227,840.41
5. Step 5: Solve for x
   x = 3,227,840.41/2,503.05
6. Step 6: Final answer
   x = 1,289.56