Finding the Fourth Proportional to 2,662.73, 3,997.61 and 2,275.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.73 : 3,997.61 = 2,275.21 : x
2. Step 2: Convert to fraction form
   2,662.73/3,997.61 = 2,275.21/x
3. Step 3: Cross multiply
   2,662.73x = 3,997.61 × 2,275.21
4. Step 4: Simplify right side
   2,662.73x = 9,095,390.87
5. Step 5: Solve for x
   x = 9,095,390.87/2,662.73
6. Step 6: Final answer
   x = 3,415.82