Finding the Fourth Proportional to 1,610.06, 2,222.30 and 911.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.06 : 2,222.30 = 911.84 : x
2. Step 2: Convert to fraction form
   1,610.06/2,222.30 = 911.84/x
3. Step 3: Cross multiply
   1,610.06x = 2,222.30 × 911.84
4. Step 4: Simplify right side
   1,610.06x = 2,026,382.03
5. Step 5: Solve for x
   x = 2,026,382.03/1,610.06
6. Step 6: Final answer
   x = 1,258.58