Finding the Fourth Proportional to 2,028.30, 2,799.06 and 1,189

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.30 : 2,799.06 = 1,189 : x
2. Step 2: Convert to fraction form
   2,028.30/2,799.06 = 1,189/x
3. Step 3: Cross multiply
   2,028.30x = 2,799.06 × 1,189
4. Step 4: Simplify right side
   2,028.30x = 3,328,082.34
5. Step 5: Solve for x
   x = 3,328,082.34/2,028.30
6. Step 6: Final answer
   x = 1,640.82