Finding the Fourth Proportional to 3,996.59, 5,995.89 and 1,223.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.59 : 5,995.89 = 1,223.15 : x
2. Step 2: Convert to fraction form
   3,996.59/5,995.89 = 1,223.15/x
3. Step 3: Cross multiply
   3,996.59x = 5,995.89 × 1,223.15
4. Step 4: Simplify right side
   3,996.59x = 7,333,842.87
5. Step 5: Solve for x
   x = 7,333,842.87/3,996.59
6. Step 6: Final answer
   x = 1,835.03