Finding the Fourth Proportional to 2,185.66, 3,273.72 and 1,772.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.66 : 3,273.72 = 1,772.88 : x
2. Step 2: Convert to fraction form
   2,185.66/3,273.72 = 1,772.88/x
3. Step 3: Cross multiply
   2,185.66x = 3,273.72 × 1,772.88
4. Step 4: Simplify right side
   2,185.66x = 5,803,912.71
5. Step 5: Solve for x
   x = 5,803,912.71/2,185.66
6. Step 6: Final answer
   x = 2,655.45