Finding the Fourth Proportional to 1,096.07, 1,642.71 and 479.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.07 : 1,642.71 = 479.61 : x
2. Step 2: Convert to fraction form
   1,096.07/1,642.71 = 479.61/x
3. Step 3: Cross multiply
   1,096.07x = 1,642.71 × 479.61
4. Step 4: Simplify right side
   1,096.07x = 787,860.14
5. Step 5: Solve for x
   x = 787,860.14/1,096.07
6. Step 6: Final answer
   x = 718.80