Finding the Fourth Proportional to 3,996.15, 5,994.18 and 1,222.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.15 : 5,994.18 = 1,222.81 : x
2. Step 2: Convert to fraction form
   3,996.15/5,994.18 = 1,222.81/x
3. Step 3: Cross multiply
   3,996.15x = 5,994.18 × 1,222.81
4. Step 4: Simplify right side
   3,996.15x = 7,329,743.25
5. Step 5: Solve for x
   x = 7,329,743.25/3,996.15
6. Step 6: Final answer
   x = 1,834.20