Finding the Fourth Proportional to 2,516.16, 3,472.31 and 1,397.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.16 : 3,472.31 = 1,397.10 : x
2. Step 2: Convert to fraction form
   2,516.16/3,472.31 = 1,397.10/x
3. Step 3: Cross multiply
   2,516.16x = 3,472.31 × 1,397.10
4. Step 4: Simplify right side
   2,516.16x = 4,851,157.32
5. Step 5: Solve for x
   x = 4,851,157.32/2,516.16
6. Step 6: Final answer
   x = 1,928.00