Finding the Fourth Proportional to 1,978.58, 2,730.35 and 1,082.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.58 : 2,730.35 = 1,082.30 : x
2. Step 2: Convert to fraction form
   1,978.58/2,730.35 = 1,082.30/x
3. Step 3: Cross multiply
   1,978.58x = 2,730.35 × 1,082.30
4. Step 4: Simplify right side
   1,978.58x = 2,955,040.77
5. Step 5: Solve for x
   x = 2,955,040.77/1,978.58
6. Step 6: Final answer
   x = 1,493.52