Finding the Fourth Proportional to 1,566.02, 2,160.72 and 867.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.02 : 2,160.72 = 867.39 : x
2. Step 2: Convert to fraction form
   1,566.02/2,160.72 = 867.39/x
3. Step 3: Cross multiply
   1,566.02x = 2,160.72 × 867.39
4. Step 4: Simplify right side
   1,566.02x = 1,874,186.92
5. Step 5: Solve for x
   x = 1,874,186.92/1,566.02
6. Step 6: Final answer
   x = 1,196.79