Finding the Fourth Proportional to 1,300.98, 1,949.71 and 478.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.98 : 1,949.71 = 478.48 : x
2. Step 2: Convert to fraction form
   1,300.98/1,949.71 = 478.48/x
3. Step 3: Cross multiply
   1,300.98x = 1,949.71 × 478.48
4. Step 4: Simplify right side
   1,300.98x = 932,897.24
5. Step 5: Solve for x
   x = 932,897.24/1,300.98
6. Step 6: Final answer
   x = 717.07