Finding the Fourth Proportional to 2,449.20, 3,672.59 and 1,279.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.20 : 3,672.59 = 1,279.02 : x
2. Step 2: Convert to fraction form
   2,449.20/3,672.59 = 1,279.02/x
3. Step 3: Cross multiply
   2,449.20x = 3,672.59 × 1,279.02
4. Step 4: Simplify right side
   2,449.20x = 4,697,309.67
5. Step 5: Solve for x
   x = 4,697,309.67/2,449.20
6. Step 6: Final answer
   x = 1,917.90