Finding the Fourth Proportional to 1,610.64, 2,222.78 and 902.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.64 : 2,222.78 = 902.54 : x
2. Step 2: Convert to fraction form
   1,610.64/2,222.78 = 902.54/x
3. Step 3: Cross multiply
   1,610.64x = 2,222.78 × 902.54
4. Step 4: Simplify right side
   1,610.64x = 2,006,147.86
5. Step 5: Solve for x
   x = 2,006,147.86/1,610.64
6. Step 6: Final answer
   x = 1,245.56