Finding the Fourth Proportional to 2,781.69, 3,840.27 and 1,898.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.69 : 3,840.27 = 1,898.79 : x
2. Step 2: Convert to fraction form
   2,781.69/3,840.27 = 1,898.79/x
3. Step 3: Cross multiply
   2,781.69x = 3,840.27 × 1,898.79
4. Step 4: Simplify right side
   2,781.69x = 7,291,866.27
5. Step 5: Solve for x
   x = 7,291,866.27/2,781.69
6. Step 6: Final answer
   x = 2,621.38