Finding the Fourth Proportional to 2,168.04, 2,991.90 and 1,173.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.04 : 2,991.90 = 1,173.32 : x
2. Step 2: Convert to fraction form
   2,168.04/2,991.90 = 1,173.32/x
3. Step 3: Cross multiply
   2,168.04x = 2,991.90 × 1,173.32
4. Step 4: Simplify right side
   2,168.04x = 3,510,456.11
5. Step 5: Solve for x
   x = 3,510,456.11/2,168.04
6. Step 6: Final answer
   x = 1,619.18