Finding the Fourth Proportional to 1,176.85, 1,762.71 and 851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,176.85 : 1,762.71 = 851.50 : x
2. Step 2: Convert to fraction form
   1,176.85/1,762.71 = 851.50/x
3. Step 3: Cross multiply
   1,176.85x = 1,762.71 × 851.50
4. Step 4: Simplify right side
   1,176.85x = 1,500,947.57
5. Step 5: Solve for x
   x = 1,500,947.57/1,176.85
6. Step 6: Final answer
   x = 1,275.39