Finding the Fourth Proportional to 1,567.34, 2,162.88 and 859.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.34 : 2,162.88 = 859.16 : x
2. Step 2: Convert to fraction form
   1,567.34/2,162.88 = 859.16/x
3. Step 3: Cross multiply
   1,567.34x = 2,162.88 × 859.16
4. Step 4: Simplify right side
   1,567.34x = 1,858,259.98
5. Step 5: Solve for x
   x = 1,858,259.98/1,567.34
6. Step 6: Final answer
   x = 1,185.61