Finding the Fourth Proportional to 2,021.88, 2,789.52 and 1,137.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.88 : 2,789.52 = 1,137.48 : x
2. Step 2: Convert to fraction form
   2,021.88/2,789.52 = 1,137.48/x
3. Step 3: Cross multiply
   2,021.88x = 2,789.52 × 1,137.48
4. Step 4: Simplify right side
   2,021.88x = 3,173,023.21
5. Step 5: Solve for x
   x = 3,173,023.21/2,021.88
6. Step 6: Final answer
   x = 1,569.34