Finding the Fourth Proportional to 1,909.83, 2,862 and 1,086.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.83 : 2,862 = 1,086.36 : x
2. Step 2: Convert to fraction form
   1,909.83/2,862 = 1,086.36/x
3. Step 3: Cross multiply
   1,909.83x = 2,862 × 1,086.36
4. Step 4: Simplify right side
   1,909.83x = 3,109,162.32
5. Step 5: Solve for x
   x = 3,109,162.32/1,909.83
6. Step 6: Final answer
   x = 1,627.98