Finding the Fourth Proportional to 2,189.10, 3,026.79 and 1,912.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.10 : 3,026.79 = 1,912.44 : x
2. Step 2: Convert to fraction form
   2,189.10/3,026.79 = 1,912.44/x
3. Step 3: Cross multiply
   2,189.10x = 3,026.79 × 1,912.44
4. Step 4: Simplify right side
   2,189.10x = 5,788,554.27
5. Step 5: Solve for x
   x = 5,788,554.27/2,189.10
6. Step 6: Final answer
   x = 2,644.26