Finding the Fourth Proportional to 2,518.98, 3,475.98 and 1,399.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.98 : 3,475.98 = 1,399.83 : x
2. Step 2: Convert to fraction form
   2,518.98/3,475.98 = 1,399.83/x
3. Step 3: Cross multiply
   2,518.98x = 3,475.98 × 1,399.83
4. Step 4: Simplify right side
   2,518.98x = 4,865,781.08
5. Step 5: Solve for x
   x = 4,865,781.08/2,518.98
6. Step 6: Final answer
   x = 1,931.65