Finding the Fourth Proportional to 1,610.33, 2,410.80 and 992.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.33 : 2,410.80 = 992.18 : x
2. Step 2: Convert to fraction form
   1,610.33/2,410.80 = 992.18/x
3. Step 3: Cross multiply
   1,610.33x = 2,410.80 × 992.18
4. Step 4: Simplify right side
   1,610.33x = 2,391,947.54
5. Step 5: Solve for x
   x = 2,391,947.54/1,610.33
6. Step 6: Final answer
   x = 1,485.38