Finding the Fourth Proportional to 1,610.31, 2,222.13 and 902.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.31 : 2,222.13 = 902.25 : x
2. Step 2: Convert to fraction form
   1,610.31/2,222.13 = 902.25/x
3. Step 3: Cross multiply
   1,610.31x = 2,222.13 × 902.25
4. Step 4: Simplify right side
   1,610.31x = 2,004,916.79
5. Step 5: Solve for x
   x = 2,004,916.79/1,610.31
6. Step 6: Final answer
   x = 1,245.05