Finding the Fourth Proportional to 1,478.71, 2,040.69 and 849.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.71 : 2,040.69 = 849.23 : x
2. Step 2: Convert to fraction form
   1,478.71/2,040.69 = 849.23/x
3. Step 3: Cross multiply
   1,478.71x = 2,040.69 × 849.23
4. Step 4: Simplify right side
   1,478.71x = 1,733,015.17
5. Step 5: Solve for x
   x = 1,733,015.17/1,478.71
6. Step 6: Final answer
   x = 1,171.98