Finding the Fourth Proportional to 2,500.77, 3,751.46 and 856.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.77 : 3,751.46 = 856.88 : x
2. Step 2: Convert to fraction form
   2,500.77/3,751.46 = 856.88/x
3. Step 3: Cross multiply
   2,500.77x = 3,751.46 × 856.88
4. Step 4: Simplify right side
   2,500.77x = 3,214,550.10
5. Step 5: Solve for x
   x = 3,214,550.10/2,500.77
6. Step 6: Final answer
   x = 1,285.42