Finding the Fourth Proportional to 2,216.80, 3,327.25 and 1,121.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.80 : 3,327.25 = 1,121.93 : x
2. Step 2: Convert to fraction form
   2,216.80/3,327.25 = 1,121.93/x
3. Step 3: Cross multiply
   2,216.80x = 3,327.25 × 1,121.93
4. Step 4: Simplify right side
   2,216.80x = 3,732,947.11
5. Step 5: Solve for x
   x = 3,732,947.11/2,216.80
6. Step 6: Final answer
   x = 1,683.94