Finding the Fourth Proportional to 2,498.72, 3,748.86 and 855.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.72 : 3,748.86 = 855.26 : x
2. Step 2: Convert to fraction form
   2,498.72/3,748.86 = 855.26/x
3. Step 3: Cross multiply
   2,498.72x = 3,748.86 × 855.26
4. Step 4: Simplify right side
   2,498.72x = 3,206,250.00
5. Step 5: Solve for x
   x = 3,206,250.00/2,498.72
6. Step 6: Final answer
   x = 1,283.16