Finding the Fourth Proportional to 2,518.42, 3,475.42 and 1,399.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.42 : 3,475.42 = 1,399.33 : x
2. Step 2: Convert to fraction form
   2,518.42/3,475.42 = 1,399.33/x
3. Step 3: Cross multiply
   2,518.42x = 3,475.42 × 1,399.33
4. Step 4: Simplify right side
   2,518.42x = 4,863,259.47
5. Step 5: Solve for x
   x = 4,863,259.47/2,518.42
6. Step 6: Final answer
   x = 1,931.08