Finding the Fourth Proportional to 2,208.32, 3,047.55 and 1,213.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.32 : 3,047.55 = 1,213.58 : x
2. Step 2: Convert to fraction form
   2,208.32/3,047.55 = 1,213.58/x
3. Step 3: Cross multiply
   2,208.32x = 3,047.55 × 1,213.58
4. Step 4: Simplify right side
   2,208.32x = 3,698,445.73
5. Step 5: Solve for x
   x = 3,698,445.73/2,208.32
6. Step 6: Final answer
   x = 1,674.78