Finding the Fourth Proportional to 3,997.89, 5,996.61 and 1,224.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.89 : 5,996.61 = 1,224.54 : x
2. Step 2: Convert to fraction form
   3,997.89/5,996.61 = 1,224.54/x
3. Step 3: Cross multiply
   3,997.89x = 5,996.61 × 1,224.54
4. Step 4: Simplify right side
   3,997.89x = 7,343,088.81
5. Step 5: Solve for x
   x = 7,343,088.81/3,997.89
6. Step 6: Final answer
   x = 1,836.74