Finding the Fourth Proportional to 1,178.37, 1,626.33 and 847.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.37 : 1,626.33 = 847.89 : x
2. Step 2: Convert to fraction form
   1,178.37/1,626.33 = 847.89/x
3. Step 3: Cross multiply
   1,178.37x = 1,626.33 × 847.89
4. Step 4: Simplify right side
   1,178.37x = 1,378,948.94
5. Step 5: Solve for x
   x = 1,378,948.94/1,178.37
6. Step 6: Final answer
   x = 1,170.22