Finding the Fourth Proportional to 2,109.62, 2,904.97 and 1,666.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.62 : 2,904.97 = 1,666.14 : x
2. Step 2: Convert to fraction form
   2,109.62/2,904.97 = 1,666.14/x
3. Step 3: Cross multiply
   2,109.62x = 2,904.97 × 1,666.14
4. Step 4: Simplify right side
   2,109.62x = 4,840,086.72
5. Step 5: Solve for x
   x = 4,840,086.72/2,109.62
6. Step 6: Final answer
   x = 2,294.29