Finding the Fourth Proportional to 2,436.56, 3,649.57 and 1,279.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.56 : 3,649.57 = 1,279.88 : x
2. Step 2: Convert to fraction form
   2,436.56/3,649.57 = 1,279.88/x
3. Step 3: Cross multiply
   2,436.56x = 3,649.57 × 1,279.88
4. Step 4: Simplify right side
   2,436.56x = 4,670,990.20
5. Step 5: Solve for x
   x = 4,670,990.20/2,436.56
6. Step 6: Final answer
   x = 1,917.05