Finding the Fourth Proportional to 2,111.01, 2,912.70 and 1,226.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.01 : 2,912.70 = 1,226.29 : x
2. Step 2: Convert to fraction form
   2,111.01/2,912.70 = 1,226.29/x
3. Step 3: Cross multiply
   2,111.01x = 2,912.70 × 1,226.29
4. Step 4: Simplify right side
   2,111.01x = 3,571,814.88
5. Step 5: Solve for x
   x = 3,571,814.88/2,111.01
6. Step 6: Final answer
   x = 1,691.99