Finding the Fourth Proportional to 2,665.86, 3,997.29 and 1,833.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.86 : 3,997.29 = 1,833.90 : x
2. Step 2: Convert to fraction form
   2,665.86/3,997.29 = 1,833.90/x
3. Step 3: Cross multiply
   2,665.86x = 3,997.29 × 1,833.90
4. Step 4: Simplify right side
   2,665.86x = 7,330,630.13
5. Step 5: Solve for x
   x = 7,330,630.13/2,665.86
6. Step 6: Final answer
   x = 2,749.82