Finding the Fourth Proportional to 2,062.80, 2,847.42 and 1,399.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.80 : 2,847.42 = 1,399.68 : x
2. Step 2: Convert to fraction form
   2,062.80/2,847.42 = 1,399.68/x
3. Step 3: Cross multiply
   2,062.80x = 2,847.42 × 1,399.68
4. Step 4: Simplify right side
   2,062.80x = 3,985,476.83
5. Step 5: Solve for x
   x = 3,985,476.83/2,062.80
6. Step 6: Final answer
   x = 1,932.07