Finding the Fourth Proportional to 2,516.55, 3,472.29 and 1,521.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.55 : 3,472.29 = 1,521.81 : x
2. Step 2: Convert to fraction form
   2,516.55/3,472.29 = 1,521.81/x
3. Step 3: Cross multiply
   2,516.55x = 3,472.29 × 1,521.81
4. Step 4: Simplify right side
   2,516.55x = 5,284,148.09
5. Step 5: Solve for x
   x = 5,284,148.09/2,516.55
6. Step 6: Final answer
   x = 2,099.76