Finding the Fourth Proportional to 1,479.76, 2,042.17 and 850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.76 : 2,042.17 = 850.50 : x
2. Step 2: Convert to fraction form
   1,479.76/2,042.17 = 850.50/x
3. Step 3: Cross multiply
   1,479.76x = 2,042.17 × 850.50
4. Step 4: Simplify right side
   1,479.76x = 1,736,857.50
5. Step 5: Solve for x
   x = 1,736,857.50/1,479.76
6. Step 6: Final answer
   x = 1,173.74