Finding the Fourth Proportional to 1,479.57, 2,218.17 and 738.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.57 : 2,218.17 = 738.69 : x
2. Step 2: Convert to fraction form
   1,479.57/2,218.17 = 738.69/x
3. Step 3: Cross multiply
   1,479.57x = 2,218.17 × 738.69
4. Step 4: Simplify right side
   1,479.57x = 1,638,540.00
5. Step 5: Solve for x
   x = 1,638,540.00/1,479.57
6. Step 6: Final answer
   x = 1,107.44