Finding the Fourth Proportional to 2,126.78, 2,934.96 and 1,242.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.78 : 2,934.96 = 1,242.42 : x
2. Step 2: Convert to fraction form
   2,126.78/2,934.96 = 1,242.42/x
3. Step 3: Cross multiply
   2,126.78x = 2,934.96 × 1,242.42
4. Step 4: Simplify right side
   2,126.78x = 3,646,453.00
5. Step 5: Solve for x
   x = 3,646,453.00/2,126.78
6. Step 6: Final answer
   x = 1,714.54