Finding the Fourth Proportional to 1,225.32, 1,836.23 and 1,078.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.32 : 1,836.23 = 1,078.71 : x
2. Step 2: Convert to fraction form
   1,225.32/1,836.23 = 1,078.71/x
3. Step 3: Cross multiply
   1,225.32x = 1,836.23 × 1,078.71
4. Step 4: Simplify right side
   1,225.32x = 1,980,754.27
5. Step 5: Solve for x
   x = 1,980,754.27/1,225.32
6. Step 6: Final answer
   x = 1,616.52