Finding the Fourth Proportional to 2,034.42, 2,808.03 and 1,288.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,034.42 : 2,808.03 = 1,288.74 : x
2. Step 2: Convert to fraction form
   2,034.42/2,808.03 = 1,288.74/x
3. Step 3: Cross multiply
   2,034.42x = 2,808.03 × 1,288.74
4. Step 4: Simplify right side
   2,034.42x = 3,618,820.58
5. Step 5: Solve for x
   x = 3,618,820.58/2,034.42
6. Step 6: Final answer
   x = 1,778.80