Finding the Fourth Proportional to 1,479.13, 2,039.79 and 1,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.13 : 2,039.79 = 1,105.72 : x
2. Step 2: Convert to fraction form
   1,479.13/2,039.79 = 1,105.72/x
3. Step 3: Cross multiply
   1,479.13x = 2,039.79 × 1,105.72
4. Step 4: Simplify right side
   1,479.13x = 2,255,436.60
5. Step 5: Solve for x
   x = 2,255,436.60/1,479.13
6. Step 6: Final answer
   x = 1,524.84