Finding the Fourth Proportional to 2,700.59, 4,051.42 and 851.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.59 : 4,051.42 = 851.87 : x
2. Step 2: Convert to fraction form
   2,700.59/4,051.42 = 851.87/x
3. Step 3: Cross multiply
   2,700.59x = 4,051.42 × 851.87
4. Step 4: Simplify right side
   2,700.59x = 3,451,291.15
5. Step 5: Solve for x
   x = 3,451,291.15/2,700.59
6. Step 6: Final answer
   x = 1,277.98