Finding the Fourth Proportional to 2,005.60, 3,009.52 and 851.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.60 : 3,009.52 = 851.04 : x
2. Step 2: Convert to fraction form
   2,005.60/3,009.52 = 851.04/x
3. Step 3: Cross multiply
   2,005.60x = 3,009.52 × 851.04
4. Step 4: Simplify right side
   2,005.60x = 2,561,221.90
5. Step 5: Solve for x
   x = 2,561,221.90/2,005.60
6. Step 6: Final answer
   x = 1,277.04