Finding the Fourth Proportional to 1,222.02, 1,683 and 1,056.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.02 : 1,683 = 1,056.06 : x
2. Step 2: Convert to fraction form
   1,222.02/1,683 = 1,056.06/x
3. Step 3: Cross multiply
   1,222.02x = 1,683 × 1,056.06
4. Step 4: Simplify right side
   1,222.02x = 1,777,348.98
5. Step 5: Solve for x
   x = 1,777,348.98/1,222.02
6. Step 6: Final answer
   x = 1,454.44