Finding the Fourth Proportional to 2,081.59, 2,872.82 and 1,242.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.59 : 2,872.82 = 1,242.51 : x
2. Step 2: Convert to fraction form
   2,081.59/2,872.82 = 1,242.51/x
3. Step 3: Cross multiply
   2,081.59x = 2,872.82 × 1,242.51
4. Step 4: Simplify right side
   2,081.59x = 3,569,507.58
5. Step 5: Solve for x
   x = 3,569,507.58/2,081.59
6. Step 6: Final answer
   x = 1,714.80