Finding the Fourth Proportional to 2,143.84, 3,216.56 and 973.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.84 : 3,216.56 = 973.76 : x
2. Step 2: Convert to fraction form
   2,143.84/3,216.56 = 973.76/x
3. Step 3: Cross multiply
   2,143.84x = 3,216.56 × 973.76
4. Step 4: Simplify right side
   2,143.84x = 3,132,157.47
5. Step 5: Solve for x
   x = 3,132,157.47/2,143.84
6. Step 6: Final answer
   x = 1,461.00