Finding the Fourth Proportional to 1,479.06, 2,216.56 and 749.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.06 : 2,216.56 = 749.12 : x
2. Step 2: Convert to fraction form
   1,479.06/2,216.56 = 749.12/x
3. Step 3: Cross multiply
   1,479.06x = 2,216.56 × 749.12
4. Step 4: Simplify right side
   1,479.06x = 1,660,469.43
5. Step 5: Solve for x
   x = 1,660,469.43/1,479.06
6. Step 6: Final answer
   x = 1,122.65