Finding the Fourth Proportional to 2,216.34, 3,318.72 and 1,292.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.34 : 3,318.72 = 1,292.34 : x
2. Step 2: Convert to fraction form
   2,216.34/3,318.72 = 1,292.34/x
3. Step 3: Cross multiply
   2,216.34x = 3,318.72 × 1,292.34
4. Step 4: Simplify right side
   2,216.34x = 4,288,914.60
5. Step 5: Solve for x
   x = 4,288,914.60/2,216.34
6. Step 6: Final answer
   x = 1,935.13