Finding the Fourth Proportional to 2,666.09, 3,680.12 and 1,604.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.09 : 3,680.12 = 1,604.45 : x
2. Step 2: Convert to fraction form
   2,666.09/3,680.12 = 1,604.45/x
3. Step 3: Cross multiply
   2,666.09x = 3,680.12 × 1,604.45
4. Step 4: Simplify right side
   2,666.09x = 5,904,568.53
5. Step 5: Solve for x
   x = 5,904,568.53/2,666.09
6. Step 6: Final answer
   x = 2,214.69