Finding the Fourth Proportional to 2,499.42, 3,748.85 and 855.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.42 : 3,748.85 = 855.75 : x
2. Step 2: Convert to fraction form
   2,499.42/3,748.85 = 855.75/x
3. Step 3: Cross multiply
   2,499.42x = 3,748.85 × 855.75
4. Step 4: Simplify right side
   2,499.42x = 3,208,074.11
5. Step 5: Solve for x
   x = 3,208,074.11/2,499.42
6. Step 6: Final answer
   x = 1,283.53