Finding the Fourth Proportional to 1,550.52, 2,139.66 and 851.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.52 : 2,139.66 = 851.88 : x
2. Step 2: Convert to fraction form
   1,550.52/2,139.66 = 851.88/x
3. Step 3: Cross multiply
   1,550.52x = 2,139.66 × 851.88
4. Step 4: Simplify right side
   1,550.52x = 1,822,733.56
5. Step 5: Solve for x
   x = 1,822,733.56/1,550.52
6. Step 6: Final answer
   x = 1,175.56