Finding the Fourth Proportional to 2,150.61, 3,227.89 and 1,330.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.61 : 3,227.89 = 1,330.47 : x
2. Step 2: Convert to fraction form
   2,150.61/3,227.89 = 1,330.47/x
3. Step 3: Cross multiply
   2,150.61x = 3,227.89 × 1,330.47
4. Step 4: Simplify right side
   2,150.61x = 4,294,610.81
5. Step 5: Solve for x
   x = 4,294,610.81/2,150.61
6. Step 6: Final answer
   x = 1,996.93