Finding the Fourth Proportional to 2,168.98, 2,992.38 and 1,423.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.98 : 2,992.38 = 1,423.35 : x
2. Step 2: Convert to fraction form
   2,168.98/2,992.38 = 1,423.35/x
3. Step 3: Cross multiply
   2,168.98x = 2,992.38 × 1,423.35
4. Step 4: Simplify right side
   2,168.98x = 4,259,196.59
5. Step 5: Solve for x
   x = 4,259,196.59/2,168.98
6. Step 6: Final answer
   x = 1,963.69