Finding the Fourth Proportional to 1,610.73, 2,222.61 and 902.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.73 : 2,222.61 = 902.61 : x
2. Step 2: Convert to fraction form
   1,610.73/2,222.61 = 902.61/x
3. Step 3: Cross multiply
   1,610.73x = 2,222.61 × 902.61
4. Step 4: Simplify right side
   1,610.73x = 2,006,150.01
5. Step 5: Solve for x
   x = 2,006,150.01/1,610.73
6. Step 6: Final answer
   x = 1,245.49