Finding the Fourth Proportional to 1,116.09, 1,672.25 and 682.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.09 : 1,672.25 = 682.34 : x
2. Step 2: Convert to fraction form
   1,116.09/1,672.25 = 682.34/x
3. Step 3: Cross multiply
   1,116.09x = 1,672.25 × 682.34
4. Step 4: Simplify right side
   1,116.09x = 1,141,031.29
5. Step 5: Solve for x
   x = 1,141,031.29/1,116.09
6. Step 6: Final answer
   x = 1,022.35