Finding the Fourth Proportional to 1,185.12, 1,775.33 and 923.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.12 : 1,775.33 = 923.86 : x
2. Step 2: Convert to fraction form
   1,185.12/1,775.33 = 923.86/x
3. Step 3: Cross multiply
   1,185.12x = 1,775.33 × 923.86
4. Step 4: Simplify right side
   1,185.12x = 1,640,156.37
5. Step 5: Solve for x
   x = 1,640,156.37/1,185.12
6. Step 6: Final answer
   x = 1,383.96