Finding the Fourth Proportional to 1,665.89, 2,496.57 and 923.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.89 : 2,496.57 = 923.75 : x
2. Step 2: Convert to fraction form
   1,665.89/2,496.57 = 923.75/x
3. Step 3: Cross multiply
   1,665.89x = 2,496.57 × 923.75
4. Step 4: Simplify right side
   1,665.89x = 2,306,194.05
5. Step 5: Solve for x
   x = 2,306,194.05/1,665.89
6. Step 6: Final answer
   x = 1,384.37