Finding the Fourth Proportional to 2,235.30, 3,085.83 and 1,439.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235.30 : 3,085.83 = 1,439.82 : x
2. Step 2: Convert to fraction form
   2,235.30/3,085.83 = 1,439.82/x
3. Step 3: Cross multiply
   2,235.30x = 3,085.83 × 1,439.82
4. Step 4: Simplify right side
   2,235.30x = 4,443,039.75
5. Step 5: Solve for x
   x = 4,443,039.75/2,235.30
6. Step 6: Final answer
   x = 1,987.67