Finding the Fourth Proportional to 1,300.23, 1,951.32 and 478.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.23 : 1,951.32 = 478.71 : x
2. Step 2: Convert to fraction form
   1,300.23/1,951.32 = 478.71/x
3. Step 3: Cross multiply
   1,300.23x = 1,951.32 × 478.71
4. Step 4: Simplify right side
   1,300.23x = 934,116.40
5. Step 5: Solve for x
   x = 934,116.40/1,300.23
6. Step 6: Final answer
   x = 718.42