Finding the Fourth Proportional to 1,397.41, 1,928.35 and 799.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.41 : 1,928.35 = 799.86 : x
2. Step 2: Convert to fraction form
   1,397.41/1,928.35 = 799.86/x
3. Step 3: Cross multiply
   1,397.41x = 1,928.35 × 799.86
4. Step 4: Simplify right side
   1,397.41x = 1,542,406.03
5. Step 5: Solve for x
   x = 1,542,406.03/1,397.41
6. Step 6: Final answer
   x = 1,103.76