Finding the Fourth Proportional to 2,435.77, 3,654.50 and 770.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.77 : 3,654.50 = 770.15 : x
2. Step 2: Convert to fraction form
   2,435.77/3,654.50 = 770.15/x
3. Step 3: Cross multiply
   2,435.77x = 3,654.50 × 770.15
4. Step 4: Simplify right side
   2,435.77x = 2,814,524.24
5. Step 5: Solve for x
   x = 2,814,524.24/2,435.77
6. Step 6: Final answer
   x = 1,155.50