Finding the Fourth Proportional to 3,793.21, 5,689.59 and 1,420.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,793.21 : 5,689.59 = 1,420.82 : x
2. Step 2: Convert to fraction form
   3,793.21/5,689.59 = 1,420.82/x
3. Step 3: Cross multiply
   3,793.21x = 5,689.59 × 1,420.82
4. Step 4: Simplify right side
   3,793.21x = 8,083,910.82
5. Step 5: Solve for x
   x = 8,083,910.82/3,793.21
6. Step 6: Final answer
   x = 2,131.15