Finding the Fourth Proportional to 2,143.50, 3,216.36 and 973.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.50 : 3,216.36 = 973.86 : x
2. Step 2: Convert to fraction form
   2,143.50/3,216.36 = 973.86/x
3. Step 3: Cross multiply
   2,143.50x = 3,216.36 × 973.86
4. Step 4: Simplify right side
   2,143.50x = 3,132,284.35
5. Step 5: Solve for x
   x = 3,132,284.35/2,143.50
6. Step 6: Final answer
   x = 1,461.29