Finding the Fourth Proportional to 3,666.91, 5,501.27 and 1,069.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.91 : 5,501.27 = 1,069.85 : x
2. Step 2: Convert to fraction form
   3,666.91/5,501.27 = 1,069.85/x
3. Step 3: Cross multiply
   3,666.91x = 5,501.27 × 1,069.85
4. Step 4: Simplify right side
   3,666.91x = 5,885,533.71
5. Step 5: Solve for x
   x = 5,885,533.71/3,666.91
6. Step 6: Final answer
   x = 1,605.04