Finding the Fourth Proportional to 1,074.42, 1,482.17 and 680.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.42 : 1,482.17 = 680.76 : x
2. Step 2: Convert to fraction form
   1,074.42/1,482.17 = 680.76/x
3. Step 3: Cross multiply
   1,074.42x = 1,482.17 × 680.76
4. Step 4: Simplify right side
   1,074.42x = 1,008,998.65
5. Step 5: Solve for x
   x = 1,008,998.65/1,074.42
6. Step 6: Final answer
   x = 939.11