Finding the Fourth Proportional to 1,003.92, 1,384.56 and 847.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.92 : 1,384.56 = 847.32 : x
2. Step 2: Convert to fraction form
   1,003.92/1,384.56 = 847.32/x
3. Step 3: Cross multiply
   1,003.92x = 1,384.56 × 847.32
4. Step 4: Simplify right side
   1,003.92x = 1,173,165.38
5. Step 5: Solve for x
   x = 1,173,165.38/1,003.92
6. Step 6: Final answer
   x = 1,168.58