Finding the Fourth Proportional to 1,087.30, 1,632.15 and 1,016.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.30 : 1,632.15 = 1,016.80 : x
2. Step 2: Convert to fraction form
   1,087.30/1,632.15 = 1,016.80/x
3. Step 3: Cross multiply
   1,087.30x = 1,632.15 × 1,016.80
4. Step 4: Simplify right side
   1,087.30x = 1,659,570.12
5. Step 5: Solve for x
   x = 1,659,570.12/1,087.30
6. Step 6: Final answer
   x = 1,526.32