Finding the Fourth Proportional to 2,665.39, 3,999.86 and 934.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.39 : 3,999.86 = 934.02 : x
2. Step 2: Convert to fraction form
   2,665.39/3,999.86 = 934.02/x
3. Step 3: Cross multiply
   2,665.39x = 3,999.86 × 934.02
4. Step 4: Simplify right side
   2,665.39x = 3,735,949.24
5. Step 5: Solve for x
   x = 3,735,949.24/2,665.39
6. Step 6: Final answer
   x = 1,401.65