Finding the Fourth Proportional to 2,002.96, 2,763.81 and 1,216.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.96 : 2,763.81 = 1,216.87 : x
2. Step 2: Convert to fraction form
   2,002.96/2,763.81 = 1,216.87/x
3. Step 3: Cross multiply
   2,002.96x = 2,763.81 × 1,216.87
4. Step 4: Simplify right side
   2,002.96x = 3,363,197.47
5. Step 5: Solve for x
   x = 3,363,197.47/2,002.96
6. Step 6: Final answer
   x = 1,679.11