Finding the Fourth Proportional to 2,665.32, 3,997.88 and 933.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.32 : 3,997.88 = 933.90 : x
2. Step 2: Convert to fraction form
   2,665.32/3,997.88 = 933.90/x
3. Step 3: Cross multiply
   2,665.32x = 3,997.88 × 933.90
4. Step 4: Simplify right side
   2,665.32x = 3,733,620.13
5. Step 5: Solve for x
   x = 3,733,620.13/2,665.32
6. Step 6: Final answer
   x = 1,400.81