Finding the Fourth Proportional to 2,516.72, 3,473.12 and 1,397.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.72 : 3,473.12 = 1,397.76 : x
2. Step 2: Convert to fraction form
   2,516.72/3,473.12 = 1,397.76/x
3. Step 3: Cross multiply
   2,516.72x = 3,473.12 × 1,397.76
4. Step 4: Simplify right side
   2,516.72x = 4,854,586.46
5. Step 5: Solve for x
   x = 4,854,586.46/2,516.72
6. Step 6: Final answer
   x = 1,928.93