Finding the Fourth Proportional to 2,320, 3,480.30 and 1,086.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320 : 3,480.30 = 1,086.76 : x
2. Step 2: Convert to fraction form
   2,320/3,480.30 = 1,086.76/x
3. Step 3: Cross multiply
   2,320x = 3,480.30 × 1,086.76
4. Step 4: Simplify right side
   2,320x = 3,782,250.83
5. Step 5: Solve for x
   x = 3,782,250.83/2,320
6. Step 6: Final answer
   x = 1,630.28