Finding the Fourth Proportional to 2,225.61, 3,071.10 and 1,230.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.61 : 3,071.10 = 1,230.73 : x
2. Step 2: Convert to fraction form
   2,225.61/3,071.10 = 1,230.73/x
3. Step 3: Cross multiply
   2,225.61x = 3,071.10 × 1,230.73
4. Step 4: Simplify right side
   2,225.61x = 3,779,679.55
5. Step 5: Solve for x
   x = 3,779,679.55/2,225.61
6. Step 6: Final answer
   x = 1,698.27