Finding the Fourth Proportional to 1,365.25, 1,884.18 and 775.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.25 : 1,884.18 = 775.81 : x
2. Step 2: Convert to fraction form
   1,365.25/1,884.18 = 775.81/x
3. Step 3: Cross multiply
   1,365.25x = 1,884.18 × 775.81
4. Step 4: Simplify right side
   1,365.25x = 1,461,765.69
5. Step 5: Solve for x
   x = 1,461,765.69/1,365.25
6. Step 6: Final answer
   x = 1,070.69