Finding the Fourth Proportional to 3,555.69, 5,333.76 and 1,090.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555.69 : 5,333.76 = 1,090.55 : x
2. Step 2: Convert to fraction form
   3,555.69/5,333.76 = 1,090.55/x
3. Step 3: Cross multiply
   3,555.69x = 5,333.76 × 1,090.55
4. Step 4: Simplify right side
   3,555.69x = 5,816,705.30
5. Step 5: Solve for x
   x = 5,816,705.30/3,555.69
6. Step 6: Final answer
   x = 1,635.89