Finding the Fourth Proportional to 1,520.97, 2,279.83 and 1,086.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.97 : 2,279.83 = 1,086.81 : x
2. Step 2: Convert to fraction form
   1,520.97/2,279.83 = 1,086.81/x
3. Step 3: Cross multiply
   1,520.97x = 2,279.83 × 1,086.81
4. Step 4: Simplify right side
   1,520.97x = 2,477,742.04
5. Step 5: Solve for x
   x = 2,477,742.04/1,520.97
6. Step 6: Final answer
   x = 1,629.05