Finding the Fourth Proportional to 800.72, 1,105.32 and 784.52

Step by Step Solution

1. Step 1: Write the proportion equation
   800.72 : 1,105.32 = 784.52 : x
2. Step 2: Convert to fraction form
   800.72/1,105.32 = 784.52/x
3. Step 3: Cross multiply
   800.72x = 1,105.32 × 784.52
4. Step 4: Simplify right side
   800.72x = 867,145.65
5. Step 5: Solve for x
   x = 867,145.65/800.72
6. Step 6: Final answer
   x = 1,082.96