Finding the Fourth Proportional to 1,300.81, 1,951.98 and 479.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.81 : 1,951.98 = 479.15 : x
2. Step 2: Convert to fraction form
   1,300.81/1,951.98 = 479.15/x
3. Step 3: Cross multiply
   1,300.81x = 1,951.98 × 479.15
4. Step 4: Simplify right side
   1,300.81x = 935,279.66
5. Step 5: Solve for x
   x = 935,279.66/1,300.81
6. Step 6: Final answer
   x = 719.00