Finding the Fourth Proportional to 1,147.05, 1,581.27 and 847.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.05 : 1,581.27 = 847.86 : x
2. Step 2: Convert to fraction form
   1,147.05/1,581.27 = 847.86/x
3. Step 3: Cross multiply
   1,147.05x = 1,581.27 × 847.86
4. Step 4: Simplify right side
   1,147.05x = 1,340,695.58
5. Step 5: Solve for x
   x = 1,340,695.58/1,147.05
6. Step 6: Final answer
   x = 1,168.82