Finding the Fourth Proportional to 1,095.86, 1,644.07 and 479.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.86 : 1,644.07 = 479.69 : x
2. Step 2: Convert to fraction form
   1,095.86/1,644.07 = 479.69/x
3. Step 3: Cross multiply
   1,095.86x = 1,644.07 × 479.69
4. Step 4: Simplify right side
   1,095.86x = 788,635.72
5. Step 5: Solve for x
   x = 788,635.72/1,095.86
6. Step 6: Final answer
   x = 719.65