Finding the Fourth Proportional to 2,515.83, 3,471.94 and 1,520.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.83 : 3,471.94 = 1,520.91 : x
2. Step 2: Convert to fraction form
   2,515.83/3,471.94 = 1,520.91/x
3. Step 3: Cross multiply
   2,515.83x = 3,471.94 × 1,520.91
4. Step 4: Simplify right side
   2,515.83x = 5,280,508.27
5. Step 5: Solve for x
   x = 5,280,508.27/2,515.83
6. Step 6: Final answer
   x = 2,098.91