Finding the Fourth Proportional to 2,516.79, 3,472.83 and 1,397.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.79 : 3,472.83 = 1,397.55 : x
2. Step 2: Convert to fraction form
   2,516.79/3,472.83 = 1,397.55/x
3. Step 3: Cross multiply
   2,516.79x = 3,472.83 × 1,397.55
4. Step 4: Simplify right side
   2,516.79x = 4,853,453.57
5. Step 5: Solve for x
   x = 4,853,453.57/2,516.79
6. Step 6: Final answer
   x = 1,928.43