Finding the Fourth Proportional to 2,312.82, 3,469.17 and 1,079.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.82 : 3,469.17 = 1,079.55 : x
2. Step 2: Convert to fraction form
   2,312.82/3,469.17 = 1,079.55/x
3. Step 3: Cross multiply
   2,312.82x = 3,469.17 × 1,079.55
4. Step 4: Simplify right side
   2,312.82x = 3,745,142.47
5. Step 5: Solve for x
   x = 3,745,142.47/2,312.82
6. Step 6: Final answer
   x = 1,619.30