Finding the Fourth Proportional to 2,435.69, 3,361.25 and 1,387.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.69 : 3,361.25 = 1,387.75 : x
2. Step 2: Convert to fraction form
   2,435.69/3,361.25 = 1,387.75/x
3. Step 3: Cross multiply
   2,435.69x = 3,361.25 × 1,387.75
4. Step 4: Simplify right side
   2,435.69x = 4,664,574.69
5. Step 5: Solve for x
   x = 4,664,574.69/2,435.69
6. Step 6: Final answer
   x = 1,915.10