Finding the Fourth Proportional to 2,435.98, 3,361.71 and 1,388.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.98 : 3,361.71 = 1,388.02 : x
2. Step 2: Convert to fraction form
   2,435.98/3,361.71 = 1,388.02/x
3. Step 3: Cross multiply
   2,435.98x = 3,361.71 × 1,388.02
4. Step 4: Simplify right side
   2,435.98x = 4,666,120.71
5. Step 5: Solve for x
   x = 4,666,120.71/2,435.98
6. Step 6: Final answer
   x = 1,915.50