Finding the Fourth Proportional to 2,235.56, 3,085.63 and 1,439.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235.56 : 3,085.63 = 1,439.42 : x
2. Step 2: Convert to fraction form
   2,235.56/3,085.63 = 1,439.42/x
3. Step 3: Cross multiply
   2,235.56x = 3,085.63 × 1,439.42
4. Step 4: Simplify right side
   2,235.56x = 4,441,498.51
5. Step 5: Solve for x
   x = 4,441,498.51/2,235.56
6. Step 6: Final answer
   x = 1,986.75