Finding the Fourth Proportional to 1,406.57, 1,940.89 and 847.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.57 : 1,940.89 = 847.03 : x
2. Step 2: Convert to fraction form
   1,406.57/1,940.89 = 847.03/x
3. Step 3: Cross multiply
   1,406.57x = 1,940.89 × 847.03
4. Step 4: Simplify right side
   1,406.57x = 1,643,984.47
5. Step 5: Solve for x
   x = 1,643,984.47/1,406.57
6. Step 6: Final answer
   x = 1,168.79