Finding the Fourth Proportional to 1,351.76, 1,865.43 and 854.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,351.76 : 1,865.43 = 854.69 : x
2. Step 2: Convert to fraction form
   1,351.76/1,865.43 = 854.69/x
3. Step 3: Cross multiply
   1,351.76x = 1,865.43 × 854.69
4. Step 4: Simplify right side
   1,351.76x = 1,594,355.04
5. Step 5: Solve for x
   x = 1,594,355.04/1,351.76
6. Step 6: Final answer
   x = 1,179.47