Finding the Fourth Proportional to 2,097.72, 3,146.58 and 636.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.72 : 3,146.58 = 636.84 : x
2. Step 2: Convert to fraction form
   2,097.72/3,146.58 = 636.84/x
3. Step 3: Cross multiply
   2,097.72x = 3,146.58 × 636.84
4. Step 4: Simplify right side
   2,097.72x = 2,003,868.01
5. Step 5: Solve for x
   x = 2,003,868.01/2,097.72
6. Step 6: Final answer
   x = 955.26