Finding the Fourth Proportional to 1,675.37, 2,313.56 and 1,078.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,675.37 : 2,313.56 = 1,078.89 : x
2. Step 2: Convert to fraction form
   1,675.37/2,313.56 = 1,078.89/x
3. Step 3: Cross multiply
   1,675.37x = 2,313.56 × 1,078.89
4. Step 4: Simplify right side
   1,675.37x = 2,496,090.29
5. Step 5: Solve for x
   x = 2,496,090.29/1,675.37
6. Step 6: Final answer
   x = 1,489.88