Finding the Fourth Proportional to 2,503.98, 3,753.54 and 859.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.98 : 3,753.54 = 859.37 : x
2. Step 2: Convert to fraction form
   2,503.98/3,753.54 = 859.37/x
3. Step 3: Cross multiply
   2,503.98x = 3,753.54 × 859.37
4. Step 4: Simplify right side
   2,503.98x = 3,225,660.90
5. Step 5: Solve for x
   x = 3,225,660.90/2,503.98
6. Step 6: Final answer
   x = 1,288.21