Finding the Fourth Proportional to 2,499.96, 3,750.72 and 856.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.96 : 3,750.72 = 856.52 : x
2. Step 2: Convert to fraction form
   2,499.96/3,750.72 = 856.52/x
3. Step 3: Cross multiply
   2,499.96x = 3,750.72 × 856.52
4. Step 4: Simplify right side
   2,499.96x = 3,212,566.69
5. Step 5: Solve for x
   x = 3,212,566.69/2,499.96
6. Step 6: Final answer
   x = 1,285.05