Finding the Fourth Proportional to 1,610.83, 2,222.87 and 902.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.83 : 2,222.87 = 902.58 : x
2. Step 2: Convert to fraction form
   1,610.83/2,222.87 = 902.58/x
3. Step 3: Cross multiply
   1,610.83x = 2,222.87 × 902.58
4. Step 4: Simplify right side
   1,610.83x = 2,006,321.83
5. Step 5: Solve for x
   x = 2,006,321.83/1,610.83
6. Step 6: Final answer
   x = 1,245.52