Finding the Fourth Proportional to 1,300.02, 1,949.72 and 478.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.02 : 1,949.72 = 478.36 : x
2. Step 2: Convert to fraction form
   1,300.02/1,949.72 = 478.36/x
3. Step 3: Cross multiply
   1,300.02x = 1,949.72 × 478.36
4. Step 4: Simplify right side
   1,300.02x = 932,668.06
5. Step 5: Solve for x
   x = 932,668.06/1,300.02
6. Step 6: Final answer
   x = 717.43