Finding the Fourth Proportional to 2,516.27, 3,472.20 and 1,397.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.27 : 3,472.20 = 1,397.12 : x
2. Step 2: Convert to fraction form
   2,516.27/3,472.20 = 1,397.12/x
3. Step 3: Cross multiply
   2,516.27x = 3,472.20 × 1,397.12
4. Step 4: Simplify right side
   2,516.27x = 4,851,062.70
5. Step 5: Solve for x
   x = 4,851,062.70/2,516.27
6. Step 6: Final answer
   x = 1,927.88