Finding the Fourth Proportional to 2,298.69, 3,173.31 and 1,661.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.69 : 3,173.31 = 1,661.22 : x
2. Step 2: Convert to fraction form
   2,298.69/3,173.31 = 1,661.22/x
3. Step 3: Cross multiply
   2,298.69x = 3,173.31 × 1,661.22
4. Step 4: Simplify right side
   2,298.69x = 5,271,566.04
5. Step 5: Solve for x
   x = 5,271,566.04/2,298.69
6. Step 6: Final answer
   x = 2,293.29