Finding the Fourth Proportional to 2,499.22, 3,748.83 and 856.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.22 : 3,748.83 = 856.24 : x
2. Step 2: Convert to fraction form
   2,499.22/3,748.83 = 856.24/x
3. Step 3: Cross multiply
   2,499.22x = 3,748.83 × 856.24
4. Step 4: Simplify right side
   2,499.22x = 3,209,890.43
5. Step 5: Solve for x
   x = 3,209,890.43/2,499.22
6. Step 6: Final answer
   x = 1,284.36