Finding the Fourth Proportional to 1,419.42, 1,957.59 and 915.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.42 : 1,957.59 = 915.36 : x
2. Step 2: Convert to fraction form
   1,419.42/1,957.59 = 915.36/x
3. Step 3: Cross multiply
   1,419.42x = 1,957.59 × 915.36
4. Step 4: Simplify right side
   1,419.42x = 1,791,899.58
5. Step 5: Solve for x
   x = 1,791,899.58/1,419.42
6. Step 6: Final answer
   x = 1,262.42