Finding the Fourth Proportional to 2,144.84, 3,218.06 and 974.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.84 : 3,218.06 = 974.76 : x
2. Step 2: Convert to fraction form
   2,144.84/3,218.06 = 974.76/x
3. Step 3: Cross multiply
   2,144.84x = 3,218.06 × 974.76
4. Step 4: Simplify right side
   2,144.84x = 3,136,836.17
5. Step 5: Solve for x
   x = 3,136,836.17/2,144.84
6. Step 6: Final answer
   x = 1,462.50