Finding the Fourth Proportional to 2,665.99, 3,998.52 and 1,204.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.99 : 3,998.52 = 1,204.80 : x
2. Step 2: Convert to fraction form
   2,665.99/3,998.52 = 1,204.80/x
3. Step 3: Cross multiply
   2,665.99x = 3,998.52 × 1,204.80
4. Step 4: Simplify right side
   2,665.99x = 4,817,401.90
5. Step 5: Solve for x
   x = 4,817,401.90/2,665.99
6. Step 6: Final answer
   x = 1,806.98