Finding the Fourth Proportional to 2,112.01, 2,913.40 and 1,227.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.01 : 2,913.40 = 1,227.71 : x
2. Step 2: Convert to fraction form
   2,112.01/2,913.40 = 1,227.71/x
3. Step 3: Cross multiply
   2,112.01x = 2,913.40 × 1,227.71
4. Step 4: Simplify right side
   2,112.01x = 3,576,819.13
5. Step 5: Solve for x
   x = 3,576,819.13/2,112.01
6. Step 6: Final answer
   x = 1,693.56