Finding the Fourth Proportional to 1,036.56, 1,554.24 and 515.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.56 : 1,554.24 = 515.94 : x
2. Step 2: Convert to fraction form
   1,036.56/1,554.24 = 515.94/x
3. Step 3: Cross multiply
   1,036.56x = 1,554.24 × 515.94
4. Step 4: Simplify right side
   1,036.56x = 801,894.59
5. Step 5: Solve for x
   x = 801,894.59/1,036.56
6. Step 6: Final answer
   x = 773.61