Finding the Fourth Proportional to 1,268.28, 1,900.89 and 575.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268.28 : 1,900.89 = 575.12 : x
2. Step 2: Convert to fraction form
   1,268.28/1,900.89 = 575.12/x
3. Step 3: Cross multiply
   1,268.28x = 1,900.89 × 575.12
4. Step 4: Simplify right side
   1,268.28x = 1,093,244.61
5. Step 5: Solve for x
   x = 1,093,244.61/1,268.28
6. Step 6: Final answer
   x = 861.99