Finding the Fourth Proportional to 1,411.23, 1,946.70 and 851.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.23 : 1,946.70 = 851.37 : x
2. Step 2: Convert to fraction form
   1,411.23/1,946.70 = 851.37/x
3. Step 3: Cross multiply
   1,411.23x = 1,946.70 × 851.37
4. Step 4: Simplify right side
   1,411.23x = 1,657,361.98
5. Step 5: Solve for x
   x = 1,657,361.98/1,411.23
6. Step 6: Final answer
   x = 1,174.41