Finding the Fourth Proportional to 2,021.46, 2,789.34 and 1,137.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.46 : 2,789.34 = 1,137.12 : x
2. Step 2: Convert to fraction form
   2,021.46/2,789.34 = 1,137.12/x
3. Step 3: Cross multiply
   2,021.46x = 2,789.34 × 1,137.12
4. Step 4: Simplify right side
   2,021.46x = 3,171,814.30
5. Step 5: Solve for x
   x = 3,171,814.30/2,021.46
6. Step 6: Final answer
   x = 1,569.07