Finding the Fourth Proportional to 2,225.59, 3,071.15 and 1,230.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.59 : 3,071.15 = 1,230.88 : x
2. Step 2: Convert to fraction form
   2,225.59/3,071.15 = 1,230.88/x
3. Step 3: Cross multiply
   2,225.59x = 3,071.15 × 1,230.88
4. Step 4: Simplify right side
   2,225.59x = 3,780,217.11
5. Step 5: Solve for x
   x = 3,780,217.11/2,225.59
6. Step 6: Final answer
   x = 1,698.52