Finding the Fourth Proportional to 699.32, 1,042.71 and 680.18

Step by Step Solution

1. Step 1: Write the proportion equation
   699.32 : 1,042.71 = 680.18 : x
2. Step 2: Convert to fraction form
   699.32/1,042.71 = 680.18/x
3. Step 3: Cross multiply
   699.32x = 1,042.71 × 680.18
4. Step 4: Simplify right side
   699.32x = 709,225.27
5. Step 5: Solve for x
   x = 709,225.27/699.32
6. Step 6: Final answer
   x = 1,014.17