Finding the Fourth Proportional to 1,566.80, 2,160.46 and 1,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.80 : 2,160.46 = 1,069.72 : x
2. Step 2: Convert to fraction form
   1,566.80/2,160.46 = 1,069.72/x
3. Step 3: Cross multiply
   1,566.80x = 2,160.46 × 1,069.72
4. Step 4: Simplify right side
   1,566.80x = 2,311,087.27
5. Step 5: Solve for x
   x = 2,311,087.27/1,566.80
6. Step 6: Final answer
   x = 1,475.04