Finding the Fourth Proportional to 2,503.65, 3,755.72 and 859.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.65 : 3,755.72 = 859.98 : x
2. Step 2: Convert to fraction form
   2,503.65/3,755.72 = 859.98/x
3. Step 3: Cross multiply
   2,503.65x = 3,755.72 × 859.98
4. Step 4: Simplify right side
   2,503.65x = 3,229,839.19
5. Step 5: Solve for x
   x = 3,229,839.19/2,503.65
6. Step 6: Final answer
   x = 1,290.05