Finding the Fourth Proportional to 2,097.89, 3,147.54 and 637.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.89 : 3,147.54 = 637.12 : x
2. Step 2: Convert to fraction form
   2,097.89/3,147.54 = 637.12/x
3. Step 3: Cross multiply
   2,097.89x = 3,147.54 × 637.12
4. Step 4: Simplify right side
   2,097.89x = 2,005,360.68
5. Step 5: Solve for x
   x = 2,005,360.68/2,097.89
6. Step 6: Final answer
   x = 955.89