Finding the Fourth Proportional to 2,809.88, 3,876.77 and 1,630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,809.88 : 3,876.77 = 1,630.72 : x
2. Step 2: Convert to fraction form
   2,809.88/3,876.77 = 1,630.72/x
3. Step 3: Cross multiply
   2,809.88x = 3,876.77 × 1,630.72
4. Step 4: Simplify right side
   2,809.88x = 6,321,926.37
5. Step 5: Solve for x
   x = 6,321,926.37/2,809.88
6. Step 6: Final answer
   x = 2,249.89