Finding the Fourth Proportional to 2,151.94, 2,969.71 and 1,207.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.94 : 2,969.71 = 1,207.94 : x
2. Step 2: Convert to fraction form
   2,151.94/2,969.71 = 1,207.94/x
3. Step 3: Cross multiply
   2,151.94x = 2,969.71 × 1,207.94
4. Step 4: Simplify right side
   2,151.94x = 3,587,213.63
5. Step 5: Solve for x
   x = 3,587,213.63/2,151.94
6. Step 6: Final answer
   x = 1,666.97