Finding the Fourth Proportional to 1,095.72, 1,642.38 and 479.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.72 : 1,642.38 = 479.52 : x
2. Step 2: Convert to fraction form
   1,095.72/1,642.38 = 479.52/x
3. Step 3: Cross multiply
   1,095.72x = 1,642.38 × 479.52
4. Step 4: Simplify right side
   1,095.72x = 787,554.06
5. Step 5: Solve for x
   x = 787,554.06/1,095.72
6. Step 6: Final answer
   x = 718.75