Finding the Fourth Proportional to 2,665.87, 3,679.82 and 1,604.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.87 : 3,679.82 = 1,604.23 : x
2. Step 2: Convert to fraction form
   2,665.87/3,679.82 = 1,604.23/x
3. Step 3: Cross multiply
   2,665.87x = 3,679.82 × 1,604.23
4. Step 4: Simplify right side
   2,665.87x = 5,903,273.63
5. Step 5: Solve for x
   x = 5,903,273.63/2,665.87
6. Step 6: Final answer
   x = 2,214.39