Finding the Fourth Proportional to 1,382.69, 2,073.76 and 516.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.69 : 2,073.76 = 516.71 : x
2. Step 2: Convert to fraction form
   1,382.69/2,073.76 = 516.71/x
3. Step 3: Cross multiply
   1,382.69x = 2,073.76 × 516.71
4. Step 4: Simplify right side
   1,382.69x = 1,071,532.53
5. Step 5: Solve for x
   x = 1,071,532.53/1,382.69
6. Step 6: Final answer
   x = 774.96