Finding the Fourth Proportional to 2,665.34, 3,999.78 and 933.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.34 : 3,999.78 = 933.96 : x
2. Step 2: Convert to fraction form
   2,665.34/3,999.78 = 933.96/x
3. Step 3: Cross multiply
   2,665.34x = 3,999.78 × 933.96
4. Step 4: Simplify right side
   2,665.34x = 3,735,634.53
5. Step 5: Solve for x
   x = 3,735,634.53/2,665.34
6. Step 6: Final answer
   x = 1,401.56