Finding the Fourth Proportional to 2,109.44, 2,910.42 and 1,665.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.44 : 2,910.42 = 1,665.92 : x
2. Step 2: Convert to fraction form
   2,109.44/2,910.42 = 1,665.92/x
3. Step 3: Cross multiply
   2,109.44x = 2,910.42 × 1,665.92
4. Step 4: Simplify right side
   2,109.44x = 4,848,526.89
5. Step 5: Solve for x
   x = 4,848,526.89/2,109.44
6. Step 6: Final answer
   x = 2,298.49