Finding the Fourth Proportional to 2,281.35, 3,145.41 and 1,903.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.35 : 3,145.41 = 1,903.78 : x
2. Step 2: Convert to fraction form
   2,281.35/3,145.41 = 1,903.78/x
3. Step 3: Cross multiply
   2,281.35x = 3,145.41 × 1,903.78
4. Step 4: Simplify right side
   2,281.35x = 5,988,186.39
5. Step 5: Solve for x
   x = 5,988,186.39/2,281.35
6. Step 6: Final answer
   x = 2,624.84