Finding the Fourth Proportional to 2,086.71, 2,880.38 and 1,202.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.71 : 2,880.38 = 1,202.87 : x
2. Step 2: Convert to fraction form
   2,086.71/2,880.38 = 1,202.87/x
3. Step 3: Cross multiply
   2,086.71x = 2,880.38 × 1,202.87
4. Step 4: Simplify right side
   2,086.71x = 3,464,702.27
5. Step 5: Solve for x
   x = 3,464,702.27/2,086.71
6. Step 6: Final answer
   x = 1,660.37