Finding the Fourth Proportional to 1,361.38, 1,878.72 and 740.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.38 : 1,878.72 = 740.38 : x
2. Step 2: Convert to fraction form
   1,361.38/1,878.72 = 740.38/x
3. Step 3: Cross multiply
   1,361.38x = 1,878.72 × 740.38
4. Step 4: Simplify right side
   1,361.38x = 1,390,966.71
5. Step 5: Solve for x
   x = 1,390,966.71/1,361.38
6. Step 6: Final answer
   x = 1,021.73