Finding the Fourth Proportional to 1,411.49, 1,946.84 and 851.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.49 : 1,946.84 = 851.72 : x
2. Step 2: Convert to fraction form
   1,411.49/1,946.84 = 851.72/x
3. Step 3: Cross multiply
   1,411.49x = 1,946.84 × 851.72
4. Step 4: Simplify right side
   1,411.49x = 1,658,148.57
5. Step 5: Solve for x
   x = 1,658,148.57/1,411.49
6. Step 6: Final answer
   x = 1,174.75