Finding the Fourth Proportional to 1,036.63, 1,555.37 and 481.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.63 : 1,555.37 = 481.61 : x
2. Step 2: Convert to fraction form
   1,036.63/1,555.37 = 481.61/x
3. Step 3: Cross multiply
   1,036.63x = 1,555.37 × 481.61
4. Step 4: Simplify right side
   1,036.63x = 749,085.03
5. Step 5: Solve for x
   x = 749,085.03/1,036.63
6. Step 6: Final answer
   x = 722.61