Finding the Fourth Proportional to 2,436.63, 3,653.86 and 770.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.63 : 3,653.86 = 770.34 : x
2. Step 2: Convert to fraction form
   2,436.63/3,653.86 = 770.34/x
3. Step 3: Cross multiply
   2,436.63x = 3,653.86 × 770.34
4. Step 4: Simplify right side
   2,436.63x = 2,814,714.51
5. Step 5: Solve for x
   x = 2,814,714.51/2,436.63
6. Step 6: Final answer
   x = 1,155.17