Finding the Fourth Proportional to 2,086.83, 2,880.55 and 1,202.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.83 : 2,880.55 = 1,202.98 : x
2. Step 2: Convert to fraction form
   2,086.83/2,880.55 = 1,202.98/x
3. Step 3: Cross multiply
   2,086.83x = 2,880.55 × 1,202.98
4. Step 4: Simplify right side
   2,086.83x = 3,465,244.04
5. Step 5: Solve for x
   x = 3,465,244.04/2,086.83
6. Step 6: Final answer
   x = 1,660.53