Finding the Fourth Proportional to 1,242.55, 1,714.72 and 683.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242.55 : 1,714.72 = 683.02 : x
2. Step 2: Convert to fraction form
   1,242.55/1,714.72 = 683.02/x
3. Step 3: Cross multiply
   1,242.55x = 1,714.72 × 683.02
4. Step 4: Simplify right side
   1,242.55x = 1,171,181.41
5. Step 5: Solve for x
   x = 1,171,181.41/1,242.55
6. Step 6: Final answer
   x = 942.56