Finding the Fourth Proportional to 1,869.38, 2,805.81 and 945.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.38 : 2,805.81 = 945.59 : x
2. Step 2: Convert to fraction form
   1,869.38/2,805.81 = 945.59/x
3. Step 3: Cross multiply
   1,869.38x = 2,805.81 × 945.59
4. Step 4: Simplify right side
   1,869.38x = 2,653,145.88
5. Step 5: Solve for x
   x = 2,653,145.88/1,869.38
6. Step 6: Final answer
   x = 1,419.27