Finding the Fourth Proportional to 2,603.32, 3,906.73 and 961.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.32 : 3,906.73 = 961.18 : x
2. Step 2: Convert to fraction form
   2,603.32/3,906.73 = 961.18/x
3. Step 3: Cross multiply
   2,603.32x = 3,906.73 × 961.18
4. Step 4: Simplify right side
   2,603.32x = 3,755,070.74
5. Step 5: Solve for x
   x = 3,755,070.74/2,603.32
6. Step 6: Final answer
   x = 1,442.42