Finding the Fourth Proportional to 2,665.26, 3,674.79 and 2,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.26 : 3,674.79 = 2,191.50 : x
2. Step 2: Convert to fraction form
   2,665.26/3,674.79 = 2,191.50/x
3. Step 3: Cross multiply
   2,665.26x = 3,674.79 × 2,191.50
4. Step 4: Simplify right side
   2,665.26x = 8,053,302.29
5. Step 5: Solve for x
   x = 8,053,302.29/2,665.26
6. Step 6: Final answer
   x = 3,021.58