Finding the Fourth Proportional to 2,480.31, 3,422.79 and 1,361.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.31 : 3,422.79 = 1,361.25 : x
2. Step 2: Convert to fraction form
   2,480.31/3,422.79 = 1,361.25/x
3. Step 3: Cross multiply
   2,480.31x = 3,422.79 × 1,361.25
4. Step 4: Simplify right side
   2,480.31x = 4,659,272.89
5. Step 5: Solve for x
   x = 4,659,272.89/2,480.31
6. Step 6: Final answer
   x = 1,878.50