Finding the Fourth Proportional to 2,080.77, 2,871.35 and 1,242.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.77 : 2,871.35 = 1,242.42 : x
2. Step 2: Convert to fraction form
   2,080.77/2,871.35 = 1,242.42/x
3. Step 3: Cross multiply
   2,080.77x = 2,871.35 × 1,242.42
4. Step 4: Simplify right side
   2,080.77x = 3,567,416.45
5. Step 5: Solve for x
   x = 3,567,416.45/2,080.77
6. Step 6: Final answer
   x = 1,714.47