Finding the Fourth Proportional to 1,610.24, 2,221.86 and 902.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.24 : 2,221.86 = 902.03 : x
2. Step 2: Convert to fraction form
   1,610.24/2,221.86 = 902.03/x
3. Step 3: Cross multiply
   1,610.24x = 2,221.86 × 902.03
4. Step 4: Simplify right side
   1,610.24x = 2,004,184.38
5. Step 5: Solve for x
   x = 2,004,184.38/1,610.24
6. Step 6: Final answer
   x = 1,244.65