Finding the Fourth Proportional to 1,392.89, 2,089.15 and 468.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.89 : 2,089.15 = 468.43 : x
2. Step 2: Convert to fraction form
   1,392.89/2,089.15 = 468.43/x
3. Step 3: Cross multiply
   1,392.89x = 2,089.15 × 468.43
4. Step 4: Simplify right side
   1,392.89x = 978,614.14
5. Step 5: Solve for x
   x = 978,614.14/1,392.89
6. Step 6: Final answer
   x = 702.58