Finding the Fourth Proportional to 2,028.42, 2,799.82 and 1,189.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.42 : 2,799.82 = 1,189.30 : x
2. Step 2: Convert to fraction form
   2,028.42/2,799.82 = 1,189.30/x
3. Step 3: Cross multiply
   2,028.42x = 2,799.82 × 1,189.30
4. Step 4: Simplify right side
   2,028.42x = 3,329,825.93
5. Step 5: Solve for x
   x = 3,329,825.93/2,028.42
6. Step 6: Final answer
   x = 1,641.59