Finding the Fourth Proportional to 2,499.26, 3,744.77 and 854.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.26 : 3,744.77 = 854.90 : x
2. Step 2: Convert to fraction form
   2,499.26/3,744.77 = 854.90/x
3. Step 3: Cross multiply
   2,499.26x = 3,744.77 × 854.90
4. Step 4: Simplify right side
   2,499.26x = 3,201,415.37
5. Step 5: Solve for x
   x = 3,201,415.37/2,499.26
6. Step 6: Final answer
   x = 1,280.95