Finding the Fourth Proportional to 2,200.16, 3,035.94 and 1,315.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.16 : 3,035.94 = 1,315.64 : x
2. Step 2: Convert to fraction form
   2,200.16/3,035.94 = 1,315.64/x
3. Step 3: Cross multiply
   2,200.16x = 3,035.94 × 1,315.64
4. Step 4: Simplify right side
   2,200.16x = 3,994,206.76
5. Step 5: Solve for x
   x = 3,994,206.76/2,200.16
6. Step 6: Final answer
   x = 1,815.41