Finding the Fourth Proportional to 2,559.16, 3,531.40 and 1,511

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.16 : 3,531.40 = 1,511 : x
2. Step 2: Convert to fraction form
   2,559.16/3,531.40 = 1,511/x
3. Step 3: Cross multiply
   2,559.16x = 3,531.40 × 1,511
4. Step 4: Simplify right side
   2,559.16x = 5,335,945.40
5. Step 5: Solve for x
   x = 5,335,945.40/2,559.16
6. Step 6: Final answer
   x = 2,085.04