Finding the Fourth Proportional to 2,111.01, 2,913.21 and 1,227.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.01 : 2,913.21 = 1,227.03 : x
2. Step 2: Convert to fraction form
   2,111.01/2,913.21 = 1,227.03/x
3. Step 3: Cross multiply
   2,111.01x = 2,913.21 × 1,227.03
4. Step 4: Simplify right side
   2,111.01x = 3,574,596.07
5. Step 5: Solve for x
   x = 3,574,596.07/2,111.01
6. Step 6: Final answer
   x = 1,693.31