Finding the Fourth Proportional to 1,361.42, 1,876.88 and 918.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.42 : 1,876.88 = 918.62 : x
2. Step 2: Convert to fraction form
   1,361.42/1,876.88 = 918.62/x
3. Step 3: Cross multiply
   1,361.42x = 1,876.88 × 918.62
4. Step 4: Simplify right side
   1,361.42x = 1,724,134.91
5. Step 5: Solve for x
   x = 1,724,134.91/1,361.42
6. Step 6: Final answer
   x = 1,266.42