Finding the Fourth Proportional to 1,300.53, 1,950.61 and 478.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.53 : 1,950.61 = 478.62 : x
2. Step 2: Convert to fraction form
   1,300.53/1,950.61 = 478.62/x
3. Step 3: Cross multiply
   1,300.53x = 1,950.61 × 478.62
4. Step 4: Simplify right side
   1,300.53x = 933,593.34
5. Step 5: Solve for x
   x = 933,593.34/1,300.53
6. Step 6: Final answer
   x = 717.85