Finding the Fourth Proportional to 2,435.05, 3,360.59 and 1,439.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.05 : 3,360.59 = 1,439.83 : x
2. Step 2: Convert to fraction form
   2,435.05/3,360.59 = 1,439.83/x
3. Step 3: Cross multiply
   2,435.05x = 3,360.59 × 1,439.83
4. Step 4: Simplify right side
   2,435.05x = 4,838,678.30
5. Step 5: Solve for x
   x = 4,838,678.30/2,435.05
6. Step 6: Final answer
   x = 1,987.10