Finding the Fourth Proportional to 1,300.45, 1,949.50 and 478.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.45 : 1,949.50 = 478.17 : x
2. Step 2: Convert to fraction form
   1,300.45/1,949.50 = 478.17/x
3. Step 3: Cross multiply
   1,300.45x = 1,949.50 × 478.17
4. Step 4: Simplify right side
   1,300.45x = 932,192.42
5. Step 5: Solve for x
   x = 932,192.42/1,300.45
6. Step 6: Final answer
   x = 716.82