Finding the Fourth Proportional to 2,225.54, 3,071.39 and 1,230.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.54 : 3,071.39 = 1,230.83 : x
2. Step 2: Convert to fraction form
   2,225.54/3,071.39 = 1,230.83/x
3. Step 3: Cross multiply
   2,225.54x = 3,071.39 × 1,230.83
4. Step 4: Simplify right side
   2,225.54x = 3,780,337.44
5. Step 5: Solve for x
   x = 3,780,337.44/2,225.54
6. Step 6: Final answer
   x = 1,698.62