Finding the Fourth Proportional to 2,028.75, 2,799.69 and 1,243.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.75 : 2,799.69 = 1,243.32 : x
2. Step 2: Convert to fraction form
   2,028.75/2,799.69 = 1,243.32/x
3. Step 3: Cross multiply
   2,028.75x = 2,799.69 × 1,243.32
4. Step 4: Simplify right side
   2,028.75x = 3,480,910.57
5. Step 5: Solve for x
   x = 3,480,910.57/2,028.75
6. Step 6: Final answer
   x = 1,715.79