Finding the Fourth Proportional to 2,059.59, 2,842.31 and 1,128.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.59 : 2,842.31 = 1,128.09 : x
2. Step 2: Convert to fraction form
   2,059.59/2,842.31 = 1,128.09/x
3. Step 3: Cross multiply
   2,059.59x = 2,842.31 × 1,128.09
4. Step 4: Simplify right side
   2,059.59x = 3,206,381.49
5. Step 5: Solve for x
   x = 3,206,381.49/2,059.59
6. Step 6: Final answer
   x = 1,556.81