Finding the Fourth Proportional to 2,427.90, 3,641.61 and 867.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.90 : 3,641.61 = 867.42 : x
2. Step 2: Convert to fraction form
   2,427.90/3,641.61 = 867.42/x
3. Step 3: Cross multiply
   2,427.90x = 3,641.61 × 867.42
4. Step 4: Simplify right side
   2,427.90x = 3,158,805.35
5. Step 5: Solve for x
   x = 3,158,805.35/2,427.90
6. Step 6: Final answer
   x = 1,301.04