Finding the Fourth Proportional to 1,300.66, 1,950.84 and 478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.66 : 1,950.84 = 478.72 : x
2. Step 2: Convert to fraction form
   1,300.66/1,950.84 = 478.72/x
3. Step 3: Cross multiply
   1,300.66x = 1,950.84 × 478.72
4. Step 4: Simplify right side
   1,300.66x = 933,906.12
5. Step 5: Solve for x
   x = 933,906.12/1,300.66
6. Step 6: Final answer
   x = 718.02