Finding the Fourth Proportional to 1,361.34, 1,878.60 and 740.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.34 : 1,878.60 = 740.34 : x
2. Step 2: Convert to fraction form
   1,361.34/1,878.60 = 740.34/x
3. Step 3: Cross multiply
   1,361.34x = 1,878.60 × 740.34
4. Step 4: Simplify right side
   1,361.34x = 1,390,802.72
5. Step 5: Solve for x
   x = 1,390,802.72/1,361.34
6. Step 6: Final answer
   x = 1,021.64