Finding the Fourth Proportional to 2,781.69, 3,835.53 and 2,612.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.69 : 3,835.53 = 2,612.18 : x
2. Step 2: Convert to fraction form
   2,781.69/3,835.53 = 2,612.18/x
3. Step 3: Cross multiply
   2,781.69x = 3,835.53 × 2,612.18
4. Step 4: Simplify right side
   2,781.69x = 10,019,075.58
5. Step 5: Solve for x
   x = 10,019,075.58/2,781.69
6. Step 6: Final answer
   x = 3,601.79