Finding the Fourth Proportional to 2,500.97, 3,749.06 and 856.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.97 : 3,749.06 = 856.35 : x
2. Step 2: Convert to fraction form
   2,500.97/3,749.06 = 856.35/x
3. Step 3: Cross multiply
   2,500.97x = 3,749.06 × 856.35
4. Step 4: Simplify right side
   2,500.97x = 3,210,503.25
5. Step 5: Solve for x
   x = 3,210,503.25/2,500.97
6. Step 6: Final answer
   x = 1,283.71