Finding the Fourth Proportional to 2,200.43, 3,036.03 and 1,315.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.43 : 3,036.03 = 1,315.61 : x
2. Step 2: Convert to fraction form
   2,200.43/3,036.03 = 1,315.61/x
3. Step 3: Cross multiply
   2,200.43x = 3,036.03 × 1,315.61
4. Step 4: Simplify right side
   2,200.43x = 3,994,230.10
5. Step 5: Solve for x
   x = 3,994,230.10/2,200.43
6. Step 6: Final answer
   x = 1,815.20