Finding the Fourth Proportional to 1,094.59, 1,640.67 and 516.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.59 : 1,640.67 = 516.25 : x
2. Step 2: Convert to fraction form
   1,094.59/1,640.67 = 516.25/x
3. Step 3: Cross multiply
   1,094.59x = 1,640.67 × 516.25
4. Step 4: Simplify right side
   1,094.59x = 846,995.89
5. Step 5: Solve for x
   x = 846,995.89/1,094.59
6. Step 6: Final answer
   x = 773.80