Finding the Fourth Proportional to 1,610.83, 2,219.83 and 1,085.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.83 : 2,219.83 = 1,085.95 : x
2. Step 2: Convert to fraction form
   1,610.83/2,219.83 = 1,085.95/x
3. Step 3: Cross multiply
   1,610.83x = 2,219.83 × 1,085.95
4. Step 4: Simplify right side
   1,610.83x = 2,410,624.39
5. Step 5: Solve for x
   x = 2,410,624.39/1,610.83
6. Step 6: Final answer
   x = 1,496.51