Finding the Fourth Proportional to 2,028.59, 2,799.50 and 1,189.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.59 : 2,799.50 = 1,189.94 : x
2. Step 2: Convert to fraction form
   2,028.59/2,799.50 = 1,189.94/x
3. Step 3: Cross multiply
   2,028.59x = 2,799.50 × 1,189.94
4. Step 4: Simplify right side
   2,028.59x = 3,331,217.08
5. Step 5: Solve for x
   x = 3,331,217.08/2,028.59
6. Step 6: Final answer
   x = 1,642.13