Finding the Fourth Proportional to 1,942.32, 2,914.56 and 847.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.32 : 2,914.56 = 847.20 : x
2. Step 2: Convert to fraction form
   1,942.32/2,914.56 = 847.20/x
3. Step 3: Cross multiply
   1,942.32x = 2,914.56 × 847.20
4. Step 4: Simplify right side
   1,942.32x = 2,469,215.23
5. Step 5: Solve for x
   x = 2,469,215.23/1,942.32
6. Step 6: Final answer
   x = 1,271.27