Finding the Fourth Proportional to 1,610.18, 2,222.27 and 1,020.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.18 : 2,222.27 = 1,020.77 : x
2. Step 2: Convert to fraction form
   1,610.18/2,222.27 = 1,020.77/x
3. Step 3: Cross multiply
   1,610.18x = 2,222.27 × 1,020.77
4. Step 4: Simplify right side
   1,610.18x = 2,268,410.33
5. Step 5: Solve for x
   x = 2,268,410.33/1,610.18
6. Step 6: Final answer
   x = 1,408.80