Finding the Fourth Proportional to 1,109.24, 1,530.34 and 716.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.24 : 1,530.34 = 716.12 : x
2. Step 2: Convert to fraction form
   1,109.24/1,530.34 = 716.12/x
3. Step 3: Cross multiply
   1,109.24x = 1,530.34 × 716.12
4. Step 4: Simplify right side
   1,109.24x = 1,095,907.08
5. Step 5: Solve for x
   x = 1,095,907.08/1,109.24
6. Step 6: Final answer
   x = 987.98