Finding the Fourth Proportional to 1,041.76, 1,563.12 and 850.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.76 : 1,563.12 = 850.72 : x
2. Step 2: Convert to fraction form
   1,041.76/1,563.12 = 850.72/x
3. Step 3: Cross multiply
   1,041.76x = 1,563.12 × 850.72
4. Step 4: Simplify right side
   1,041.76x = 1,329,777.45
5. Step 5: Solve for x
   x = 1,329,777.45/1,041.76
6. Step 6: Final answer
   x = 1,276.47