Finding the Fourth Proportional to 2,700.63, 4,051.50 and 851.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.63 : 4,051.50 = 851.88 : x
2. Step 2: Convert to fraction form
   2,700.63/4,051.50 = 851.88/x
3. Step 3: Cross multiply
   2,700.63x = 4,051.50 × 851.88
4. Step 4: Simplify right side
   2,700.63x = 3,451,391.82
5. Step 5: Solve for x
   x = 3,451,391.82/2,700.63
6. Step 6: Final answer
   x = 1,278.00