Finding the Fourth Proportional to 2,215.54, 3,056.23 and 1,283.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.54 : 3,056.23 = 1,283.86 : x
2. Step 2: Convert to fraction form
   2,215.54/3,056.23 = 1,283.86/x
3. Step 3: Cross multiply
   2,215.54x = 3,056.23 × 1,283.86
4. Step 4: Simplify right side
   2,215.54x = 3,923,771.45
5. Step 5: Solve for x
   x = 3,923,771.45/2,215.54
6. Step 6: Final answer
   x = 1,771.02