Finding the Fourth Proportional to 1,036.58, 1,552.10 and 872.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.58 : 1,552.10 = 872.56 : x
2. Step 2: Convert to fraction form
   1,036.58/1,552.10 = 872.56/x
3. Step 3: Cross multiply
   1,036.58x = 1,552.10 × 872.56
4. Step 4: Simplify right side
   1,036.58x = 1,354,300.38
5. Step 5: Solve for x
   x = 1,354,300.38/1,036.58
6. Step 6: Final answer
   x = 1,306.51