Finding the Fourth Proportional to 1,653.69, 2,477.15 and 923.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,653.69 : 2,477.15 = 923.65 : x
2. Step 2: Convert to fraction form
   1,653.69/2,477.15 = 923.65/x
3. Step 3: Cross multiply
   1,653.69x = 2,477.15 × 923.65
4. Step 4: Simplify right side
   1,653.69x = 2,288,019.60
5. Step 5: Solve for x
   x = 2,288,019.60/1,653.69
6. Step 6: Final answer
   x = 1,383.58