Finding the Fourth Proportional to 2,155.92, 3,234.06 and 770.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.92 : 3,234.06 = 770.01 : x
2. Step 2: Convert to fraction form
   2,155.92/3,234.06 = 770.01/x
3. Step 3: Cross multiply
   2,155.92x = 3,234.06 × 770.01
4. Step 4: Simplify right side
   2,155.92x = 2,490,258.54
5. Step 5: Solve for x
   x = 2,490,258.54/2,155.92
6. Step 6: Final answer
   x = 1,155.08