Finding the Fourth Proportional to 1,361.48, 1,878.92 and 764.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.48 : 1,878.92 = 764.04 : x
2. Step 2: Convert to fraction form
   1,361.48/1,878.92 = 764.04/x
3. Step 3: Cross multiply
   1,361.48x = 1,878.92 × 764.04
4. Step 4: Simplify right side
   1,361.48x = 1,435,570.04
5. Step 5: Solve for x
   x = 1,435,570.04/1,361.48
6. Step 6: Final answer
   x = 1,054.42