Finding the Fourth Proportional to 2,074.63, 3,111.98 and 841.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.63 : 3,111.98 = 841.18 : x
2. Step 2: Convert to fraction form
   2,074.63/3,111.98 = 841.18/x
3. Step 3: Cross multiply
   2,074.63x = 3,111.98 × 841.18
4. Step 4: Simplify right side
   2,074.63x = 2,617,729.66
5. Step 5: Solve for x
   x = 2,617,729.66/2,074.63
6. Step 6: Final answer
   x = 1,261.78