Finding the Fourth Proportional to 1,676.39, 2,313.56 and 930.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676.39 : 2,313.56 = 930.42 : x
2. Step 2: Convert to fraction form
   1,676.39/2,313.56 = 930.42/x
3. Step 3: Cross multiply
   1,676.39x = 2,313.56 × 930.42
4. Step 4: Simplify right side
   1,676.39x = 2,152,579.59
5. Step 5: Solve for x
   x = 2,152,579.59/1,676.39
6. Step 6: Final answer
   x = 1,284.06