Finding the Fourth Proportional to 2,518.22, 3,474.98 and 1,399.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.22 : 3,474.98 = 1,399.16 : x
2. Step 2: Convert to fraction form
   2,518.22/3,474.98 = 1,399.16/x
3. Step 3: Cross multiply
   2,518.22x = 3,474.98 × 1,399.16
4. Step 4: Simplify right side
   2,518.22x = 4,862,053.02
5. Step 5: Solve for x
   x = 4,862,053.02/2,518.22
6. Step 6: Final answer
   x = 1,930.75