Finding the Fourth Proportional to 1,610.34, 2,222.22 and 911.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.34 : 2,222.22 = 911.71 : x
2. Step 2: Convert to fraction form
   1,610.34/2,222.22 = 911.71/x
3. Step 3: Cross multiply
   1,610.34x = 2,222.22 × 911.71
4. Step 4: Simplify right side
   1,610.34x = 2,026,020.20
5. Step 5: Solve for x
   x = 2,026,020.20/1,610.34
6. Step 6: Final answer
   x = 1,258.13