Finding the Fourth Proportional to 2,114.67, 3,172.16 and 654.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.67 : 3,172.16 = 654.86 : x
2. Step 2: Convert to fraction form
   2,114.67/3,172.16 = 654.86/x
3. Step 3: Cross multiply
   2,114.67x = 3,172.16 × 654.86
4. Step 4: Simplify right side
   2,114.67x = 2,077,301.56
5. Step 5: Solve for x
   x = 2,077,301.56/2,114.67
6. Step 6: Final answer
   x = 982.33