Finding the Fourth Proportional to 1,549.76, 2,138.72 and 851.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,549.76 : 2,138.72 = 851.16 : x
2. Step 2: Convert to fraction form
   1,549.76/2,138.72 = 851.16/x
3. Step 3: Cross multiply
   1,549.76x = 2,138.72 × 851.16
4. Step 4: Simplify right side
   1,549.76x = 1,820,392.92
5. Step 5: Solve for x
   x = 1,820,392.92/1,549.76
6. Step 6: Final answer
   x = 1,174.63