Finding the Fourth Proportional to 2,168.10, 2,991.96 and 1,173.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.10 : 2,991.96 = 1,173.37 : x
2. Step 2: Convert to fraction form
   2,168.10/2,991.96 = 1,173.37/x
3. Step 3: Cross multiply
   2,168.10x = 2,991.96 × 1,173.37
4. Step 4: Simplify right side
   2,168.10x = 3,510,668.63
5. Step 5: Solve for x
   x = 3,510,668.63/2,168.10
6. Step 6: Final answer
   x = 1,619.24