Finding the Fourth Proportional to 2,480.31, 3,422.93 and 1,361.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.31 : 3,422.93 = 1,361.30 : x
2. Step 2: Convert to fraction form
   2,480.31/3,422.93 = 1,361.30/x
3. Step 3: Cross multiply
   2,480.31x = 3,422.93 × 1,361.30
4. Step 4: Simplify right side
   2,480.31x = 4,659,610.69
5. Step 5: Solve for x
   x = 4,659,610.69/2,480.31
6. Step 6: Final answer
   x = 1,878.64