Finding the Fourth Proportional to 2,021.22, 2,789.32 and 1,322.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.22 : 2,789.32 = 1,322.59 : x
2. Step 2: Convert to fraction form
   2,021.22/2,789.32 = 1,322.59/x
3. Step 3: Cross multiply
   2,021.22x = 2,789.32 × 1,322.59
4. Step 4: Simplify right side
   2,021.22x = 3,689,126.74
5. Step 5: Solve for x
   x = 3,689,126.74/2,021.22
6. Step 6: Final answer
   x = 1,825.20