Finding the Fourth Proportional to 2,097, 3,145.50 and 636.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097 : 3,145.50 = 636.12 : x
2. Step 2: Convert to fraction form
   2,097/3,145.50 = 636.12/x
3. Step 3: Cross multiply
   2,097x = 3,145.50 × 636.12
4. Step 4: Simplify right side
   2,097x = 2,000,915.46
5. Step 5: Solve for x
   x = 2,000,915.46/2,097
6. Step 6: Final answer
   x = 954.18