Finding the Fourth Proportional to 2,219.82, 3,063.31 and 1,225.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.82 : 3,063.31 = 1,225.11 : x
2. Step 2: Convert to fraction form
   2,219.82/3,063.31 = 1,225.11/x
3. Step 3: Cross multiply
   2,219.82x = 3,063.31 × 1,225.11
4. Step 4: Simplify right side
   2,219.82x = 3,752,891.71
5. Step 5: Solve for x
   x = 3,752,891.71/2,219.82
6. Step 6: Final answer
   x = 1,690.63