Finding the Fourth Proportional to 2,516.57, 3,472.82 and 1,397.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.57 : 3,472.82 = 1,397.45 : x
2. Step 2: Convert to fraction form
   2,516.57/3,472.82 = 1,397.45/x
3. Step 3: Cross multiply
   2,516.57x = 3,472.82 × 1,397.45
4. Step 4: Simplify right side
   2,516.57x = 4,853,067.96
5. Step 5: Solve for x
   x = 4,853,067.96/2,516.57
6. Step 6: Final answer
   x = 1,928.45