Finding the Fourth Proportional to 2,168.42, 2,992.68 and 1,383.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.42 : 2,992.68 = 1,383.53 : x
2. Step 2: Convert to fraction form
   2,168.42/2,992.68 = 1,383.53/x
3. Step 3: Cross multiply
   2,168.42x = 2,992.68 × 1,383.53
4. Step 4: Simplify right side
   2,168.42x = 4,140,462.56
5. Step 5: Solve for x
   x = 4,140,462.56/2,168.42
6. Step 6: Final answer
   x = 1,909.44