Finding the Fourth Proportional to 1,499.11, 2,245.83 and 850.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.11 : 2,245.83 = 850.30 : x
2. Step 2: Convert to fraction form
   1,499.11/2,245.83 = 850.30/x
3. Step 3: Cross multiply
   1,499.11x = 2,245.83 × 850.30
4. Step 4: Simplify right side
   1,499.11x = 1,909,629.25
5. Step 5: Solve for x
   x = 1,909,629.25/1,499.11
6. Step 6: Final answer
   x = 1,273.84