Finding the Fourth Proportional to 2,665.21, 3,999.59 and 933.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.21 : 3,999.59 = 933.84 : x
2. Step 2: Convert to fraction form
   2,665.21/3,999.59 = 933.84/x
3. Step 3: Cross multiply
   2,665.21x = 3,999.59 × 933.84
4. Step 4: Simplify right side
   2,665.21x = 3,734,977.13
5. Step 5: Solve for x
   x = 3,734,977.13/2,665.21
6. Step 6: Final answer
   x = 1,401.38