Finding the Fourth Proportional to 2,028.09, 2,798.61 and 1,188.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.09 : 2,798.61 = 1,188.69 : x
2. Step 2: Convert to fraction form
   2,028.09/2,798.61 = 1,188.69/x
3. Step 3: Cross multiply
   2,028.09x = 2,798.61 × 1,188.69
4. Step 4: Simplify right side
   2,028.09x = 3,326,679.72
5. Step 5: Solve for x
   x = 3,326,679.72/2,028.09
6. Step 6: Final answer
   x = 1,640.30