Finding the Fourth Proportional to 1,357.43, 1,872.57 and 914.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.43 : 1,872.57 = 914.56 : x
2. Step 2: Convert to fraction form
   1,357.43/1,872.57 = 914.56/x
3. Step 3: Cross multiply
   1,357.43x = 1,872.57 × 914.56
4. Step 4: Simplify right side
   1,357.43x = 1,712,577.62
5. Step 5: Solve for x
   x = 1,712,577.62/1,357.43
6. Step 6: Final answer
   x = 1,261.63