Finding the Fourth Proportional to 2,002.74, 2,763.63 and 1,216.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.74 : 2,763.63 = 1,216.68 : x
2. Step 2: Convert to fraction form
   2,002.74/2,763.63 = 1,216.68/x
3. Step 3: Cross multiply
   2,002.74x = 2,763.63 × 1,216.68
4. Step 4: Simplify right side
   2,002.74x = 3,362,453.35
5. Step 5: Solve for x
   x = 3,362,453.35/2,002.74
6. Step 6: Final answer
   x = 1,678.93