Finding the Fourth Proportional to 2,080.86, 2,870.57 and 1,241.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.86 : 2,870.57 = 1,241.30 : x
2. Step 2: Convert to fraction form
   2,080.86/2,870.57 = 1,241.30/x
3. Step 3: Cross multiply
   2,080.86x = 2,870.57 × 1,241.30
4. Step 4: Simplify right side
   2,080.86x = 3,563,217.98
5. Step 5: Solve for x
   x = 3,563,217.98/2,080.86
6. Step 6: Final answer
   x = 1,712.38