Finding the Fourth Proportional to 2,005.88, 3,010.10 and 851.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.88 : 3,010.10 = 851.63 : x
2. Step 2: Convert to fraction form
   2,005.88/3,010.10 = 851.63/x
3. Step 3: Cross multiply
   2,005.88x = 3,010.10 × 851.63
4. Step 4: Simplify right side
   2,005.88x = 2,563,472.15
5. Step 5: Solve for x
   x = 2,563,472.15/2,005.88
6. Step 6: Final answer
   x = 1,277.98