Finding the Fourth Proportional to 1,056.72, 1,582.32 and 850.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.72 : 1,582.32 = 850.16 : x
2. Step 2: Convert to fraction form
   1,056.72/1,582.32 = 850.16/x
3. Step 3: Cross multiply
   1,056.72x = 1,582.32 × 850.16
4. Step 4: Simplify right side
   1,056.72x = 1,345,225.17
5. Step 5: Solve for x
   x = 1,345,225.17/1,056.72
6. Step 6: Final answer
   x = 1,273.02