Finding the Fourth Proportional to 2,215.05, 3,056.50 and 1,270.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.05 : 3,056.50 = 1,270.79 : x
2. Step 2: Convert to fraction form
   2,215.05/3,056.50 = 1,270.79/x
3. Step 3: Cross multiply
   2,215.05x = 3,056.50 × 1,270.79
4. Step 4: Simplify right side
   2,215.05x = 3,884,169.64
5. Step 5: Solve for x
   x = 3,884,169.64/2,215.05
6. Step 6: Final answer
   x = 1,753.54