Finding the Fourth Proportional to 2,499.41, 3,749.64 and 855.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.41 : 3,749.64 = 855.51 : x
2. Step 2: Convert to fraction form
   2,499.41/3,749.64 = 855.51/x
3. Step 3: Cross multiply
   2,499.41x = 3,749.64 × 855.51
4. Step 4: Simplify right side
   2,499.41x = 3,207,863.15
5. Step 5: Solve for x
   x = 3,207,863.15/2,499.41
6. Step 6: Final answer
   x = 1,283.45