Finding the Fourth Proportional to 2,059.89, 2,842.65 and 1,128.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.89 : 2,842.65 = 1,128.39 : x
2. Step 2: Convert to fraction form
   2,059.89/2,842.65 = 1,128.39/x
3. Step 3: Cross multiply
   2,059.89x = 2,842.65 × 1,128.39
4. Step 4: Simplify right side
   2,059.89x = 3,207,617.83
5. Step 5: Solve for x
   x = 3,207,617.83/2,059.89
6. Step 6: Final answer
   x = 1,557.18