Finding the Fourth Proportional to 2,402.18, 3,603.38 and 842.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.18 : 3,603.38 = 842.34 : x
2. Step 2: Convert to fraction form
   2,402.18/3,603.38 = 842.34/x
3. Step 3: Cross multiply
   2,402.18x = 3,603.38 × 842.34
4. Step 4: Simplify right side
   2,402.18x = 3,035,271.11
5. Step 5: Solve for x
   x = 3,035,271.11/2,402.18
6. Step 6: Final answer
   x = 1,263.55