Finding the Fourth Proportional to 1,406.49, 1,940.88 and 847.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.49 : 1,940.88 = 847.18 : x
2. Step 2: Convert to fraction form
   1,406.49/1,940.88 = 847.18/x
3. Step 3: Cross multiply
   1,406.49x = 1,940.88 × 847.18
4. Step 4: Simplify right side
   1,406.49x = 1,644,274.72
5. Step 5: Solve for x
   x = 1,644,274.72/1,406.49
6. Step 6: Final answer
   x = 1,169.06