Finding the Fourth Proportional to 3,505.99, 5,259.52 and 1,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,505.99 : 5,259.52 = 1,040.50 : x
2. Step 2: Convert to fraction form
   3,505.99/5,259.52 = 1,040.50/x
3. Step 3: Cross multiply
   3,505.99x = 5,259.52 × 1,040.50
4. Step 4: Simplify right side
   3,505.99x = 5,472,532.58
5. Step 5: Solve for x
   x = 5,472,532.58/3,505.99
6. Step 6: Final answer
   x = 1,560.91