Finding the Fourth Proportional to 1,485.36, 2,047.94 and 1,086.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.36 : 2,047.94 = 1,086.71 : x
2. Step 2: Convert to fraction form
   1,485.36/2,047.94 = 1,086.71/x
3. Step 3: Cross multiply
   1,485.36x = 2,047.94 × 1,086.71
4. Step 4: Simplify right side
   1,485.36x = 2,225,505.28
5. Step 5: Solve for x
   x = 2,225,505.28/1,485.36
6. Step 6: Final answer
   x = 1,498.29