Finding the Fourth Proportional to 2,004.86, 2,991.98 and 1,786.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,004.86 : 2,991.98 = 1,786.16 : x
2. Step 2: Convert to fraction form
   2,004.86/2,991.98 = 1,786.16/x
3. Step 3: Cross multiply
   2,004.86x = 2,991.98 × 1,786.16
4. Step 4: Simplify right side
   2,004.86x = 5,344,131.11
5. Step 5: Solve for x
   x = 5,344,131.11/2,004.86
6. Step 6: Final answer
   x = 2,665.59