Finding the Fourth Proportional to 1,382.59, 2,072.69 and 651.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.59 : 2,072.69 = 651.65 : x
2. Step 2: Convert to fraction form
   1,382.59/2,072.69 = 651.65/x
3. Step 3: Cross multiply
   1,382.59x = 2,072.69 × 651.65
4. Step 4: Simplify right side
   1,382.59x = 1,350,667.09
5. Step 5: Solve for x
   x = 1,350,667.09/1,382.59
6. Step 6: Final answer
   x = 976.91