Finding the Fourth Proportional to 2,220.50, 3,064.27 and 1,225.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220.50 : 3,064.27 = 1,225.77 : x
2. Step 2: Convert to fraction form
   2,220.50/3,064.27 = 1,225.77/x
3. Step 3: Cross multiply
   2,220.50x = 3,064.27 × 1,225.77
4. Step 4: Simplify right side
   2,220.50x = 3,756,096.37
5. Step 5: Solve for x
   x = 3,756,096.37/2,220.50
6. Step 6: Final answer
   x = 1,691.56