Finding the Fourth Proportional to 2,560.71, 3,841.12 and 1,059.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560.71 : 3,841.12 = 1,059.89 : x
2. Step 2: Convert to fraction form
   2,560.71/3,841.12 = 1,059.89/x
3. Step 3: Cross multiply
   2,560.71x = 3,841.12 × 1,059.89
4. Step 4: Simplify right side
   2,560.71x = 4,071,146.80
5. Step 5: Solve for x
   x = 4,071,146.80/2,560.71
6. Step 6: Final answer
   x = 1,589.85