Finding the Fourth Proportional to 1,300.62, 1,949.82 and 478.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.62 : 1,949.82 = 478.48 : x
2. Step 2: Convert to fraction form
   1,300.62/1,949.82 = 478.48/x
3. Step 3: Cross multiply
   1,300.62x = 1,949.82 × 478.48
4. Step 4: Simplify right side
   1,300.62x = 932,949.87
5. Step 5: Solve for x
   x = 932,949.87/1,300.62
6. Step 6: Final answer
   x = 717.31