Finding the Fourth Proportional to 1,550.56, 2,139.79 and 851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.56 : 2,139.79 = 851.94 : x
2. Step 2: Convert to fraction form
   1,550.56/2,139.79 = 851.94/x
3. Step 3: Cross multiply
   1,550.56x = 2,139.79 × 851.94
4. Step 4: Simplify right side
   1,550.56x = 1,822,972.69
5. Step 5: Solve for x
   x = 1,822,972.69/1,550.56
6. Step 6: Final answer
   x = 1,175.69