Finding the Fourth Proportional to 2,503.31, 3,754.82 and 859.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.31 : 3,754.82 = 859.68 : x
2. Step 2: Convert to fraction form
   2,503.31/3,754.82 = 859.68/x
3. Step 3: Cross multiply
   2,503.31x = 3,754.82 × 859.68
4. Step 4: Simplify right side
   2,503.31x = 3,227,945.81
5. Step 5: Solve for x
   x = 3,227,945.81/2,503.31
6. Step 6: Final answer
   x = 1,289.47