Finding the Fourth Proportional to 2,155.69, 3,225.63 and 1,764.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.69 : 3,225.63 = 1,764.73 : x
2. Step 2: Convert to fraction form
   2,155.69/3,225.63 = 1,764.73/x
3. Step 3: Cross multiply
   2,155.69x = 3,225.63 × 1,764.73
4. Step 4: Simplify right side
   2,155.69x = 5,692,366.03
5. Step 5: Solve for x
   x = 5,692,366.03/2,155.69
6. Step 6: Final answer
   x = 2,640.62