Finding the Fourth Proportional to 1,439.41, 1,986.24 and 849.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.41 : 1,986.24 = 849.85 : x
2. Step 2: Convert to fraction form
   1,439.41/1,986.24 = 849.85/x
3. Step 3: Cross multiply
   1,439.41x = 1,986.24 × 849.85
4. Step 4: Simplify right side
   1,439.41x = 1,688,006.06
5. Step 5: Solve for x
   x = 1,688,006.06/1,439.41
6. Step 6: Final answer
   x = 1,172.71