Finding the Fourth Proportional to 3,091.33, 4,638.18 and 1,859.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,091.33 : 4,638.18 = 1,859.61 : x
2. Step 2: Convert to fraction form
   3,091.33/4,638.18 = 1,859.61/x
3. Step 3: Cross multiply
   3,091.33x = 4,638.18 × 1,859.61
4. Step 4: Simplify right side
   3,091.33x = 8,625,196.61
5. Step 5: Solve for x
   x = 8,625,196.61/3,091.33
6. Step 6: Final answer
   x = 2,790.12