Finding the Fourth Proportional to 2,171.42, 2,996.62 and 1,227.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.42 : 2,996.62 = 1,227.02 : x
2. Step 2: Convert to fraction form
   2,171.42/2,996.62 = 1,227.02/x
3. Step 3: Cross multiply
   2,171.42x = 2,996.62 × 1,227.02
4. Step 4: Simplify right side
   2,171.42x = 3,676,912.67
5. Step 5: Solve for x
   x = 3,676,912.67/2,171.42
6. Step 6: Final answer
   x = 1,693.32