Finding the Fourth Proportional to 1,094.72, 1,638.42 and 682.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.72 : 1,638.42 = 682.42 : x
2. Step 2: Convert to fraction form
   1,094.72/1,638.42 = 682.42/x
3. Step 3: Cross multiply
   1,094.72x = 1,638.42 × 682.42
4. Step 4: Simplify right side
   1,094.72x = 1,118,090.58
5. Step 5: Solve for x
   x = 1,118,090.58/1,094.72
6. Step 6: Final answer
   x = 1,021.35