Finding the Fourth Proportional to 1,087.63, 1,499.25 and 866.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.63 : 1,499.25 = 866.23 : x
2. Step 2: Convert to fraction form
   1,087.63/1,499.25 = 866.23/x
3. Step 3: Cross multiply
   1,087.63x = 1,499.25 × 866.23
4. Step 4: Simplify right side
   1,087.63x = 1,298,695.33
5. Step 5: Solve for x
   x = 1,298,695.33/1,087.63
6. Step 6: Final answer
   x = 1,194.06