Finding the Fourth Proportional to 2,922.96, 4,385.20 and 1,279.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,922.96 : 4,385.20 = 1,279.82 : x
2. Step 2: Convert to fraction form
   2,922.96/4,385.20 = 1,279.82/x
3. Step 3: Cross multiply
   2,922.96x = 4,385.20 × 1,279.82
4. Step 4: Simplify right side
   2,922.96x = 5,612,266.66
5. Step 5: Solve for x
   x = 5,612,266.66/2,922.96
6. Step 6: Final answer
   x = 1,920.06