Finding the Fourth Proportional to 1,760.44, 2,638.32 and 1,315.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.44 : 2,638.32 = 1,315.04 : x
2. Step 2: Convert to fraction form
   1,760.44/2,638.32 = 1,315.04/x
3. Step 3: Cross multiply
   1,760.44x = 2,638.32 × 1,315.04
4. Step 4: Simplify right side
   1,760.44x = 3,469,496.33
5. Step 5: Solve for x
   x = 3,469,496.33/1,760.44
6. Step 6: Final answer
   x = 1,970.81