Finding the Fourth Proportional to 2,666.90, 3,680.67 and 1,923.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.90 : 3,680.67 = 1,923.32 : x
2. Step 2: Convert to fraction form
   2,666.90/3,680.67 = 1,923.32/x
3. Step 3: Cross multiply
   2,666.90x = 3,680.67 × 1,923.32
4. Step 4: Simplify right side
   2,666.90x = 7,079,087.82
5. Step 5: Solve for x
   x = 7,079,087.82/2,666.90
6. Step 6: Final answer
   x = 2,654.43