Finding the Fourth Proportional to 1,610.19, 2,219.42 and 1,078.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.19 : 2,219.42 = 1,078.89 : x
2. Step 2: Convert to fraction form
   1,610.19/2,219.42 = 1,078.89/x
3. Step 3: Cross multiply
   1,610.19x = 2,219.42 × 1,078.89
4. Step 4: Simplify right side
   1,610.19x = 2,394,493.55
5. Step 5: Solve for x
   x = 2,394,493.55/1,610.19
6. Step 6: Final answer
   x = 1,487.09