Finding the Fourth Proportional to 3,997.83, 5,991.51 and 2,146.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.83 : 5,991.51 = 2,146.78 : x
2. Step 2: Convert to fraction form
   3,997.83/5,991.51 = 2,146.78/x
3. Step 3: Cross multiply
   3,997.83x = 5,991.51 × 2,146.78
4. Step 4: Simplify right side
   3,997.83x = 12,862,438.86
5. Step 5: Solve for x
   x = 12,862,438.86/3,997.83
6. Step 6: Final answer
   x = 3,217.36