Finding the Fourth Proportional to 2,791.81, 4,185.69 and 1,404.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,791.81 : 4,185.69 = 1,404.15 : x
2. Step 2: Convert to fraction form
   2,791.81/4,185.69 = 1,404.15/x
3. Step 3: Cross multiply
   2,791.81x = 4,185.69 × 1,404.15
4. Step 4: Simplify right side
   2,791.81x = 5,877,336.61
5. Step 5: Solve for x
   x = 5,877,336.61/2,791.81
6. Step 6: Final answer
   x = 2,105.21