Finding the Fourth Proportional to 2,003.85, 2,764.26 and 1,217.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.85 : 2,764.26 = 1,217.34 : x
2. Step 2: Convert to fraction form
   2,003.85/2,764.26 = 1,217.34/x
3. Step 3: Cross multiply
   2,003.85x = 2,764.26 × 1,217.34
4. Step 4: Simplify right side
   2,003.85x = 3,365,044.27
5. Step 5: Solve for x
   x = 3,365,044.27/2,003.85
6. Step 6: Final answer
   x = 1,679.29