Finding the Fourth Proportional to 2,151.99, 2,969.57 and 1,207.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.99 : 2,969.57 = 1,207.59 : x
2. Step 2: Convert to fraction form
   2,151.99/2,969.57 = 1,207.59/x
3. Step 3: Cross multiply
   2,151.99x = 2,969.57 × 1,207.59
4. Step 4: Simplify right side
   2,151.99x = 3,586,017.00
5. Step 5: Solve for x
   x = 3,586,017.00/2,151.99
6. Step 6: Final answer
   x = 1,666.37