Finding the Fourth Proportional to 2,528.22, 3,488.22 and 1,645.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.22 : 3,488.22 = 1,645.32 : x
2. Step 2: Convert to fraction form
   2,528.22/3,488.22 = 1,645.32/x
3. Step 3: Cross multiply
   2,528.22x = 3,488.22 × 1,645.32
4. Step 4: Simplify right side
   2,528.22x = 5,739,238.13
5. Step 5: Solve for x
   x = 5,739,238.13/2,528.22
6. Step 6: Final answer
   x = 2,270.07