Finding the Fourth Proportional to 2,559.36, 3,531.92 and 1,511.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.36 : 3,531.92 = 1,511.40 : x
2. Step 2: Convert to fraction form
   2,559.36/3,531.92 = 1,511.40/x
3. Step 3: Cross multiply
   2,559.36x = 3,531.92 × 1,511.40
4. Step 4: Simplify right side
   2,559.36x = 5,338,143.89
5. Step 5: Solve for x
   x = 5,338,143.89/2,559.36
6. Step 6: Final answer
   x = 2,085.73