Finding the Fourth Proportional to 1,242.31, 1,714.41 and 682.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242.31 : 1,714.41 = 682.83 : x
2. Step 2: Convert to fraction form
   1,242.31/1,714.41 = 682.83/x
3. Step 3: Cross multiply
   1,242.31x = 1,714.41 × 682.83
4. Step 4: Simplify right side
   1,242.31x = 1,170,650.58
5. Step 5: Solve for x
   x = 1,170,650.58/1,242.31
6. Step 6: Final answer
   x = 942.32