Finding the Fourth Proportional to 2,665.94, 3,999.16 and 999.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.94 : 3,999.16 = 999.62 : x
2. Step 2: Convert to fraction form
   2,665.94/3,999.16 = 999.62/x
3. Step 3: Cross multiply
   2,665.94x = 3,999.16 × 999.62
4. Step 4: Simplify right side
   2,665.94x = 3,997,640.32
5. Step 5: Solve for x
   x = 3,997,640.32/2,665.94
6. Step 6: Final answer
   x = 1,499.52