Finding the Fourth Proportional to 2,636.68, 3,953.85 and 1,403.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.68 : 3,953.85 = 1,403.83 : x
2. Step 2: Convert to fraction form
   2,636.68/3,953.85 = 1,403.83/x
3. Step 3: Cross multiply
   2,636.68x = 3,953.85 × 1,403.83
4. Step 4: Simplify right side
   2,636.68x = 5,550,533.25
5. Step 5: Solve for x
   x = 5,550,533.25/2,636.68
6. Step 6: Final answer
   x = 2,105.12