Finding the Fourth Proportional to 2,781.87, 4,173.59 and 1,393.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.87 : 4,173.59 = 1,393.53 : x
2. Step 2: Convert to fraction form
   2,781.87/4,173.59 = 1,393.53/x
3. Step 3: Cross multiply
   2,781.87x = 4,173.59 × 1,393.53
4. Step 4: Simplify right side
   2,781.87x = 5,816,022.87
5. Step 5: Solve for x
   x = 5,816,022.87/2,781.87
6. Step 6: Final answer
   x = 2,090.69