Finding the Fourth Proportional to 2,435.58, 3,361.32 and 1,387.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.58 : 3,361.32 = 1,387.98 : x
2. Step 2: Convert to fraction form
   2,435.58/3,361.32 = 1,387.98/x
3. Step 3: Cross multiply
   2,435.58x = 3,361.32 × 1,387.98
4. Step 4: Simplify right side
   2,435.58x = 4,665,444.93
5. Step 5: Solve for x
   x = 4,665,444.93/2,435.58
6. Step 6: Final answer
   x = 1,915.54