Finding the Fourth Proportional to 1,610.15, 2,412.43 and 731.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.15 : 2,412.43 = 731.25 : x
2. Step 2: Convert to fraction form
   1,610.15/2,412.43 = 731.25/x
3. Step 3: Cross multiply
   1,610.15x = 2,412.43 × 731.25
4. Step 4: Simplify right side
   1,610.15x = 1,764,087.61
5. Step 5: Solve for x
   x = 1,764,087.61/1,610.15
6. Step 6: Final answer
   x = 1,095.61