Finding the Fourth Proportional to 1,565.91, 2,347.89 and 1,078.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565.91 : 2,347.89 = 1,078.41 : x
2. Step 2: Convert to fraction form
   1,565.91/2,347.89 = 1,078.41/x
3. Step 3: Cross multiply
   1,565.91x = 2,347.89 × 1,078.41
4. Step 4: Simplify right side
   1,565.91x = 2,531,988.05
5. Step 5: Solve for x
   x = 2,531,988.05/1,565.91
6. Step 6: Final answer
   x = 1,616.94