Finding the Fourth Proportional to 2,131.23, 2,942.96 and 1,434.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.23 : 2,942.96 = 1,434.63 : x
2. Step 2: Convert to fraction form
   2,131.23/2,942.96 = 1,434.63/x
3. Step 3: Cross multiply
   2,131.23x = 2,942.96 × 1,434.63
4. Step 4: Simplify right side
   2,131.23x = 4,222,058.70
5. Step 5: Solve for x
   x = 4,222,058.70/2,131.23
6. Step 6: Final answer
   x = 1,981.04