Finding the Fourth Proportional to 2,499.85, 3,749.98 and 855.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.85 : 3,749.98 = 855.96 : x
2. Step 2: Convert to fraction form
   2,499.85/3,749.98 = 855.96/x
3. Step 3: Cross multiply
   2,499.85x = 3,749.98 × 855.96
4. Step 4: Simplify right side
   2,499.85x = 3,209,814.13
5. Step 5: Solve for x
   x = 3,209,814.13/2,499.85
6. Step 6: Final answer
   x = 1,284.00