Finding the Fourth Proportional to 2,028.39, 2,798.55 and 1,189.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.39 : 2,798.55 = 1,189.08 : x
2. Step 2: Convert to fraction form
   2,028.39/2,798.55 = 1,189.08/x
3. Step 3: Cross multiply
   2,028.39x = 2,798.55 × 1,189.08
4. Step 4: Simplify right side
   2,028.39x = 3,327,699.83
5. Step 5: Solve for x
   x = 3,327,699.83/2,028.39
6. Step 6: Final answer
   x = 1,640.56