Finding the Fourth Proportional to 2,151.84, 2,969.69 and 1,207.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.84 : 2,969.69 = 1,207.73 : x
2. Step 2: Convert to fraction form
   2,151.84/2,969.69 = 1,207.73/x
3. Step 3: Cross multiply
   2,151.84x = 2,969.69 × 1,207.73
4. Step 4: Simplify right side
   2,151.84x = 3,586,562.82
5. Step 5: Solve for x
   x = 3,586,562.82/2,151.84
6. Step 6: Final answer
   x = 1,666.74