Finding the Fourth Proportional to 2,003.24, 2,763.96 and 1,217.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.24 : 2,763.96 = 1,217.30 : x
2. Step 2: Convert to fraction form
   2,003.24/2,763.96 = 1,217.30/x
3. Step 3: Cross multiply
   2,003.24x = 2,763.96 × 1,217.30
4. Step 4: Simplify right side
   2,003.24x = 3,364,568.51
5. Step 5: Solve for x
   x = 3,364,568.51/2,003.24
6. Step 6: Final answer
   x = 1,679.56