Finding the Fourth Proportional to 2,559.31, 3,531.87 and 1,511.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.31 : 3,531.87 = 1,511.35 : x
2. Step 2: Convert to fraction form
   2,559.31/3,531.87 = 1,511.35/x
3. Step 3: Cross multiply
   2,559.31x = 3,531.87 × 1,511.35
4. Step 4: Simplify right side
   2,559.31x = 5,337,891.72
5. Step 5: Solve for x
   x = 5,337,891.72/2,559.31
6. Step 6: Final answer
   x = 2,085.68