Finding the Fourth Proportional to 2,003.67, 2,765.12 and 1,217.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.67 : 2,765.12 = 1,217.25 : x
2. Step 2: Convert to fraction form
   2,003.67/2,765.12 = 1,217.25/x
3. Step 3: Cross multiply
   2,003.67x = 2,765.12 × 1,217.25
4. Step 4: Simplify right side
   2,003.67x = 3,365,836.23
5. Step 5: Solve for x
   x = 3,365,836.23/2,003.67
6. Step 6: Final answer
   x = 1,679.84