Finding the Fourth Proportional to 2,506.85, 3,458.39 and 1,511.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,506.85 : 3,458.39 = 1,511.57 : x
2. Step 2: Convert to fraction form
   2,506.85/3,458.39 = 1,511.57/x
3. Step 3: Cross multiply
   2,506.85x = 3,458.39 × 1,511.57
4. Step 4: Simplify right side
   2,506.85x = 5,227,573.72
5. Step 5: Solve for x
   x = 5,227,573.72/2,506.85
6. Step 6: Final answer
   x = 2,085.31