Finding the Fourth Proportional to 1,036.52, 1,554.78 and 306.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.52 : 1,554.78 = 306.15 : x
2. Step 2: Convert to fraction form
   1,036.52/1,554.78 = 306.15/x
3. Step 3: Cross multiply
   1,036.52x = 1,554.78 × 306.15
4. Step 4: Simplify right side
   1,036.52x = 476,003.90
5. Step 5: Solve for x
   x = 476,003.90/1,036.52
6. Step 6: Final answer
   x = 459.23