Finding the Fourth Proportional to 2,217.15, 3,326.18 and 1,047.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.15 : 3,326.18 = 1,047.15 : x
2. Step 2: Convert to fraction form
   2,217.15/3,326.18 = 1,047.15/x
3. Step 3: Cross multiply
   2,217.15x = 3,326.18 × 1,047.15
4. Step 4: Simplify right side
   2,217.15x = 3,483,004.15
5. Step 5: Solve for x
   x = 3,483,004.15/2,217.15
6. Step 6: Final answer
   x = 1,570.94