Finding the Fourth Proportional to 2,002.96, 2,763.79 and 1,216.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.96 : 2,763.79 = 1,216.86 : x
2. Step 2: Convert to fraction form
   2,002.96/2,763.79 = 1,216.86/x
3. Step 3: Cross multiply
   2,002.96x = 2,763.79 × 1,216.86
4. Step 4: Simplify right side
   2,002.96x = 3,363,145.50
5. Step 5: Solve for x
   x = 3,363,145.50/2,002.96
6. Step 6: Final answer
   x = 1,679.09