Finding the Fourth Proportional to 1,035.63, 1,553.89 and 516.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.63 : 1,553.89 = 516.15 : x
2. Step 2: Convert to fraction form
   1,035.63/1,553.89 = 516.15/x
3. Step 3: Cross multiply
   1,035.63x = 1,553.89 × 516.15
4. Step 4: Simplify right side
   1,035.63x = 802,040.32
5. Step 5: Solve for x
   x = 802,040.32/1,035.63
6. Step 6: Final answer
   x = 774.45