Finding the Fourth Proportional to 2,288.72, 3,434.49 and 1,056.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.72 : 3,434.49 = 1,056.22 : x
2. Step 2: Convert to fraction form
   2,288.72/3,434.49 = 1,056.22/x
3. Step 3: Cross multiply
   2,288.72x = 3,434.49 × 1,056.22
4. Step 4: Simplify right side
   2,288.72x = 3,627,581.45
5. Step 5: Solve for x
   x = 3,627,581.45/2,288.72
6. Step 6: Final answer
   x = 1,584.98