Finding the Fourth Proportional to 2,097.69, 3,146.33 and 636.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.69 : 3,146.33 = 636.85 : x
2. Step 2: Convert to fraction form
   2,097.69/3,146.33 = 636.85/x
3. Step 3: Cross multiply
   2,097.69x = 3,146.33 × 636.85
4. Step 4: Simplify right side
   2,097.69x = 2,003,742.20
5. Step 5: Solve for x
   x = 2,003,742.20/2,097.69
6. Step 6: Final answer
   x = 955.22