Finding the Fourth Proportional to 2,518.83, 3,475.92 and 1,399.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.83 : 3,475.92 = 1,399.68 : x
2. Step 2: Convert to fraction form
   2,518.83/3,475.92 = 1,399.68/x
3. Step 3: Cross multiply
   2,518.83x = 3,475.92 × 1,399.68
4. Step 4: Simplify right side
   2,518.83x = 4,865,175.71
5. Step 5: Solve for x
   x = 4,865,175.71/2,518.83
6. Step 6: Final answer
   x = 1,931.52