Finding the Fourth Proportional to 1,978.45, 2,730.27 and 1,082.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.45 : 2,730.27 = 1,082.22 : x
2. Step 2: Convert to fraction form
   1,978.45/2,730.27 = 1,082.22/x
3. Step 3: Cross multiply
   1,978.45x = 2,730.27 × 1,082.22
4. Step 4: Simplify right side
   1,978.45x = 2,954,746.62
5. Step 5: Solve for x
   x = 2,954,746.62/1,978.45
6. Step 6: Final answer
   x = 1,493.47