Finding the Fourth Proportional to 3,553.33, 5,330.59 and 1,087.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,553.33 : 5,330.59 = 1,087.57 : x
2. Step 2: Convert to fraction form
   3,553.33/5,330.59 = 1,087.57/x
3. Step 3: Cross multiply
   3,553.33x = 5,330.59 × 1,087.57
4. Step 4: Simplify right side
   3,553.33x = 5,797,389.77
5. Step 5: Solve for x
   x = 5,797,389.77/3,553.33
6. Step 6: Final answer
   x = 1,631.54