Finding the Fourth Proportional to 1,676.50, 2,313.57 and 930.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676.50 : 2,313.57 = 930.57 : x
2. Step 2: Convert to fraction form
   1,676.50/2,313.57 = 930.57/x
3. Step 3: Cross multiply
   1,676.50x = 2,313.57 × 930.57
4. Step 4: Simplify right side
   1,676.50x = 2,152,938.83
5. Step 5: Solve for x
   x = 2,152,938.83/1,676.50
6. Step 6: Final answer
   x = 1,284.19