Finding the Fourth Proportional to 1,300.59, 1,951.88 and 778.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.59 : 1,951.88 = 778.98 : x
2. Step 2: Convert to fraction form
   1,300.59/1,951.88 = 778.98/x
3. Step 3: Cross multiply
   1,300.59x = 1,951.88 × 778.98
4. Step 4: Simplify right side
   1,300.59x = 1,520,475.48
5. Step 5: Solve for x
   x = 1,520,475.48/1,300.59
6. Step 6: Final answer
   x = 1,169.07