Finding the Fourth Proportional to 2,100.36, 3,147.89 and 1,839.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.36 : 3,147.89 = 1,839.74 : x
2. Step 2: Convert to fraction form
   2,100.36/3,147.89 = 1,839.74/x
3. Step 3: Cross multiply
   2,100.36x = 3,147.89 × 1,839.74
4. Step 4: Simplify right side
   2,100.36x = 5,791,274.21
5. Step 5: Solve for x
   x = 5,791,274.21/2,100.36
6. Step 6: Final answer
   x = 2,757.28