Finding the Fourth Proportional to 2,320.75, 3,480.31 and 933.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.75 : 3,480.31 = 933.72 : x
2. Step 2: Convert to fraction form
   2,320.75/3,480.31 = 933.72/x
3. Step 3: Cross multiply
   2,320.75x = 3,480.31 × 933.72
4. Step 4: Simplify right side
   2,320.75x = 3,249,630.38
5. Step 5: Solve for x
   x = 3,249,630.38/2,320.75
6. Step 6: Final answer
   x = 1,400.25