Finding the Fourth Proportional to 3,716.82, 5,572.59 and 1,866.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,716.82 : 5,572.59 = 1,866.60 : x
2. Step 2: Convert to fraction form
   3,716.82/5,572.59 = 1,866.60/x
3. Step 3: Cross multiply
   3,716.82x = 5,572.59 × 1,866.60
4. Step 4: Simplify right side
   3,716.82x = 10,401,796.49
5. Step 5: Solve for x
   x = 10,401,796.49/3,716.82
6. Step 6: Final answer
   x = 2,798.57