Finding the Fourth Proportional to 2,021.46, 2,789.88 and 1,137.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.46 : 2,789.88 = 1,137.30 : x
2. Step 2: Convert to fraction form
   2,021.46/2,789.88 = 1,137.30/x
3. Step 3: Cross multiply
   2,021.46x = 2,789.88 × 1,137.30
4. Step 4: Simplify right side
   2,021.46x = 3,172,930.52
5. Step 5: Solve for x
   x = 3,172,930.52/2,021.46
6. Step 6: Final answer
   x = 1,569.62