Finding the Fourth Proportional to 1,357.62, 1,872.36 and 914.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.62 : 1,872.36 = 914.94 : x
2. Step 2: Convert to fraction form
   1,357.62/1,872.36 = 914.94/x
3. Step 3: Cross multiply
   1,357.62x = 1,872.36 × 914.94
4. Step 4: Simplify right side
   1,357.62x = 1,713,097.06
5. Step 5: Solve for x
   x = 1,713,097.06/1,357.62
6. Step 6: Final answer
   x = 1,261.84