Finding the Fourth Proportional to 1,610.74, 2,222.71 and 902.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.74 : 2,222.71 = 902.46 : x
2. Step 2: Convert to fraction form
   1,610.74/2,222.71 = 902.46/x
3. Step 3: Cross multiply
   1,610.74x = 2,222.71 × 902.46
4. Step 4: Simplify right side
   1,610.74x = 2,005,906.87
5. Step 5: Solve for x
   x = 2,005,906.87/1,610.74
6. Step 6: Final answer
   x = 1,245.33