Finding the Fourth Proportional to 2,636.89, 3,955.96 and 1,404.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.89 : 3,955.96 = 1,404.05 : x
2. Step 2: Convert to fraction form
   2,636.89/3,955.96 = 1,404.05/x
3. Step 3: Cross multiply
   2,636.89x = 3,955.96 × 1,404.05
4. Step 4: Simplify right side
   2,636.89x = 5,554,357.13
5. Step 5: Solve for x
   x = 5,554,357.13/2,636.89
6. Step 6: Final answer
   x = 2,106.40