Finding the Fourth Proportional to 834.42, 1,150.56 and 784.20

Step by Step Solution

1. Step 1: Write the proportion equation
   834.42 : 1,150.56 = 784.20 : x
2. Step 2: Convert to fraction form
   834.42/1,150.56 = 784.20/x
3. Step 3: Cross multiply
   834.42x = 1,150.56 × 784.20
4. Step 4: Simplify right side
   834.42x = 902,269.15
5. Step 5: Solve for x
   x = 902,269.15/834.42
6. Step 6: Final answer
   x = 1,081.31