Finding the Fourth Proportional to 2,021.43, 2,789.73 and 1,137.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.43 : 2,789.73 = 1,137.32 : x
2. Step 2: Convert to fraction form
   2,021.43/2,789.73 = 1,137.32/x
3. Step 3: Cross multiply
   2,021.43x = 2,789.73 × 1,137.32
4. Step 4: Simplify right side
   2,021.43x = 3,172,801.77
5. Step 5: Solve for x
   x = 3,172,801.77/2,021.43
6. Step 6: Final answer
   x = 1,569.58