Finding the Fourth Proportional to 3,658.78, 5,488.41 and 1,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658.78 : 5,488.41 = 1,061.50 : x
2. Step 2: Convert to fraction form
   3,658.78/5,488.41 = 1,061.50/x
3. Step 3: Cross multiply
   3,658.78x = 5,488.41 × 1,061.50
4. Step 4: Simplify right side
   3,658.78x = 5,825,947.22
5. Step 5: Solve for x
   x = 5,825,947.22/3,658.78
6. Step 6: Final answer
   x = 1,592.32