Finding the Fourth Proportional to 2,218.59, 3,326.27 and 1,047.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.59 : 3,326.27 = 1,047.87 : x
2. Step 2: Convert to fraction form
   2,218.59/3,326.27 = 1,047.87/x
3. Step 3: Cross multiply
   2,218.59x = 3,326.27 × 1,047.87
4. Step 4: Simplify right side
   2,218.59x = 3,485,493.31
5. Step 5: Solve for x
   x = 3,485,493.31/2,218.59
6. Step 6: Final answer
   x = 1,571.04