Finding the Fourth Proportional to 2,208.84, 3,313.56 and 1,054.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.84 : 3,313.56 = 1,054.56 : x
2. Step 2: Convert to fraction form
   2,208.84/3,313.56 = 1,054.56/x
3. Step 3: Cross multiply
   2,208.84x = 3,313.56 × 1,054.56
4. Step 4: Simplify right side
   2,208.84x = 3,494,347.83
5. Step 5: Solve for x
   x = 3,494,347.83/2,208.84
6. Step 6: Final answer
   x = 1,581.98