Finding the Fourth Proportional to 3,500.79, 5,251.89 and 1,035.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,500.79 : 5,251.89 = 1,035.55 : x
2. Step 2: Convert to fraction form
   3,500.79/5,251.89 = 1,035.55/x
3. Step 3: Cross multiply
   3,500.79x = 5,251.89 × 1,035.55
4. Step 4: Simplify right side
   3,500.79x = 5,438,589.51
5. Step 5: Solve for x
   x = 5,438,589.51/3,500.79
6. Step 6: Final answer
   x = 1,553.53