Finding the Fourth Proportional to 2,043.18, 2,819.84 and 1,987.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.18 : 2,819.84 = 1,987.61 : x
2. Step 2: Convert to fraction form
   2,043.18/2,819.84 = 1,987.61/x
3. Step 3: Cross multiply
   2,043.18x = 2,819.84 × 1,987.61
4. Step 4: Simplify right side
   2,043.18x = 5,604,718.15
5. Step 5: Solve for x
   x = 5,604,718.15/2,043.18
6. Step 6: Final answer
   x = 2,743.13