Finding the Fourth Proportional to 1,351.89, 1,865.43 and 847.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,351.89 : 1,865.43 = 847.67 : x
2. Step 2: Convert to fraction form
   1,351.89/1,865.43 = 847.67/x
3. Step 3: Cross multiply
   1,351.89x = 1,865.43 × 847.67
4. Step 4: Simplify right side
   1,351.89x = 1,581,259.72
5. Step 5: Solve for x
   x = 1,581,259.72/1,351.89
6. Step 6: Final answer
   x = 1,169.67