Finding the Fourth Proportional to 2,659.63, 3,989.49 and 1,360.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.63 : 3,989.49 = 1,360.30 : x
2. Step 2: Convert to fraction form
   2,659.63/3,989.49 = 1,360.30/x
3. Step 3: Cross multiply
   2,659.63x = 3,989.49 × 1,360.30
4. Step 4: Simplify right side
   2,659.63x = 5,426,903.25
5. Step 5: Solve for x
   x = 5,426,903.25/2,659.63
6. Step 6: Final answer
   x = 2,040.47