Finding the Fourth Proportional to 1,300.59, 1,949.13 and 651.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.59 : 1,949.13 = 651.78 : x
2. Step 2: Convert to fraction form
   1,300.59/1,949.13 = 651.78/x
3. Step 3: Cross multiply
   1,300.59x = 1,949.13 × 651.78
4. Step 4: Simplify right side
   1,300.59x = 1,270,403.95
5. Step 5: Solve for x
   x = 1,270,403.95/1,300.59
6. Step 6: Final answer
   x = 976.79