Finding the Fourth Proportional to 2,781.90, 3,856.59 and 2,633.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.90 : 3,856.59 = 2,633.94 : x
2. Step 2: Convert to fraction form
   2,781.90/3,856.59 = 2,633.94/x
3. Step 3: Cross multiply
   2,781.90x = 3,856.59 × 2,633.94
4. Step 4: Simplify right side
   2,781.90x = 10,158,026.66
5. Step 5: Solve for x
   x = 10,158,026.66/2,781.90
6. Step 6: Final answer
   x = 3,651.47