Finding the Fourth Proportional to 1,109.92, 1,530.96 and 760.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.92 : 1,530.96 = 760.96 : x
2. Step 2: Convert to fraction form
   1,109.92/1,530.96 = 760.96/x
3. Step 3: Cross multiply
   1,109.92x = 1,530.96 × 760.96
4. Step 4: Simplify right side
   1,109.92x = 1,164,999.32
5. Step 5: Solve for x
   x = 1,164,999.32/1,109.92
6. Step 6: Final answer
   x = 1,049.62