Finding the Fourth Proportional to 2,087.86, 2,880.35 and 1,203.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.86 : 2,880.35 = 1,203.14 : x
2. Step 2: Convert to fraction form
   2,087.86/2,880.35 = 1,203.14/x
3. Step 3: Cross multiply
   2,087.86x = 2,880.35 × 1,203.14
4. Step 4: Simplify right side
   2,087.86x = 3,465,464.30
5. Step 5: Solve for x
   x = 3,465,464.30/2,087.86
6. Step 6: Final answer
   x = 1,659.82