Finding the Fourth Proportional to 3,538.78, 5,308.42 and 1,073.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,538.78 : 5,308.42 = 1,073.80 : x
2. Step 2: Convert to fraction form
   3,538.78/5,308.42 = 1,073.80/x
3. Step 3: Cross multiply
   3,538.78x = 5,308.42 × 1,073.80
4. Step 4: Simplify right side
   3,538.78x = 5,700,181.40
5. Step 5: Solve for x
   x = 5,700,181.40/3,538.78
6. Step 6: Final answer
   x = 1,610.78