Finding the Fourth Proportional to 1,361.52, 1,878.96 and 1,047.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.52 : 1,878.96 = 1,047.12 : x
2. Step 2: Convert to fraction form
   1,361.52/1,878.96 = 1,047.12/x
3. Step 3: Cross multiply
   1,361.52x = 1,878.96 × 1,047.12
4. Step 4: Simplify right side
   1,361.52x = 1,967,496.60
5. Step 5: Solve for x
   x = 1,967,496.60/1,361.52
6. Step 6: Final answer
   x = 1,445.07