Finding the Fourth Proportional to 1,549.88, 2,138.83 and 851.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,549.88 : 2,138.83 = 851.25 : x
2. Step 2: Convert to fraction form
   1,549.88/2,138.83 = 851.25/x
3. Step 3: Cross multiply
   1,549.88x = 2,138.83 × 851.25
4. Step 4: Simplify right side
   1,549.88x = 1,820,676.91
5. Step 5: Solve for x
   x = 1,820,676.91/1,549.88
6. Step 6: Final answer
   x = 1,174.73