Finding the Fourth Proportional to 2,443.61, 3,664.42 and 777.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.61 : 3,664.42 = 777.16 : x
2. Step 2: Convert to fraction form
   2,443.61/3,664.42 = 777.16/x
3. Step 3: Cross multiply
   2,443.61x = 3,664.42 × 777.16
4. Step 4: Simplify right side
   2,443.61x = 2,847,836.76
5. Step 5: Solve for x
   x = 2,847,836.76/2,443.61
6. Step 6: Final answer
   x = 1,165.42