Finding the Fourth Proportional to 2,636.26, 3,953.78 and 1,819.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.26 : 3,953.78 = 1,819.78 : x
2. Step 2: Convert to fraction form
   2,636.26/3,953.78 = 1,819.78/x
3. Step 3: Cross multiply
   2,636.26x = 3,953.78 × 1,819.78
4. Step 4: Simplify right side
   2,636.26x = 7,195,009.77
5. Step 5: Solve for x
   x = 7,195,009.77/2,636.26
6. Step 6: Final answer
   x = 2,729.25