Finding the Fourth Proportional to 2,219.94, 3,063.54 and 1,225.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.94 : 3,063.54 = 1,225.22 : x
2. Step 2: Convert to fraction form
   2,219.94/3,063.54 = 1,225.22/x
3. Step 3: Cross multiply
   2,219.94x = 3,063.54 × 1,225.22
4. Step 4: Simplify right side
   2,219.94x = 3,753,499.76
5. Step 5: Solve for x
   x = 3,753,499.76/2,219.94
6. Step 6: Final answer
   x = 1,690.81