Finding the Fourth Proportional to 2,220.06, 3,063.72 and 1,225.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220.06 : 3,063.72 = 1,225.42 : x
2. Step 2: Convert to fraction form
   2,220.06/3,063.72 = 1,225.42/x
3. Step 3: Cross multiply
   2,220.06x = 3,063.72 × 1,225.42
4. Step 4: Simplify right side
   2,220.06x = 3,754,343.76
5. Step 5: Solve for x
   x = 3,754,343.76/2,220.06
6. Step 6: Final answer
   x = 1,691.10