Finding the Fourth Proportional to 1,412.36, 1,949.62 and 915.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.36 : 1,949.62 = 915.42 : x
2. Step 2: Convert to fraction form
   1,412.36/1,949.62 = 915.42/x
3. Step 3: Cross multiply
   1,412.36x = 1,949.62 × 915.42
4. Step 4: Simplify right side
   1,412.36x = 1,784,721.14
5. Step 5: Solve for x
   x = 1,784,721.14/1,412.36
6. Step 6: Final answer
   x = 1,263.65