Finding the Fourth Proportional to 2,359.20, 3,539.72 and 973.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.20 : 3,539.72 = 973.20 : x
2. Step 2: Convert to fraction form
   2,359.20/3,539.72 = 973.20/x
3. Step 3: Cross multiply
   2,359.20x = 3,539.72 × 973.20
4. Step 4: Simplify right side
   2,359.20x = 3,444,855.50
5. Step 5: Solve for x
   x = 3,444,855.50/2,359.20
6. Step 6: Final answer
   x = 1,460.18