Finding the Fourth Proportional to 1,087.56, 1,499.54 and 825.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.56 : 1,499.54 = 825.12 : x
2. Step 2: Convert to fraction form
   1,087.56/1,499.54 = 825.12/x
3. Step 3: Cross multiply
   1,087.56x = 1,499.54 × 825.12
4. Step 4: Simplify right side
   1,087.56x = 1,237,300.44
5. Step 5: Solve for x
   x = 1,237,300.44/1,087.56
6. Step 6: Final answer
   x = 1,137.68