Finding the Fourth Proportional to 2,401.79, 3,603.55 and 842.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.79 : 3,603.55 = 842.22 : x
2. Step 2: Convert to fraction form
   2,401.79/3,603.55 = 842.22/x
3. Step 3: Cross multiply
   2,401.79x = 3,603.55 × 842.22
4. Step 4: Simplify right side
   2,401.79x = 3,034,979.78
5. Step 5: Solve for x
   x = 3,034,979.78/2,401.79
6. Step 6: Final answer
   x = 1,263.64