Finding the Fourth Proportional to 2,151.07, 2,968.77 and 1,555.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.07 : 2,968.77 = 1,555.49 : x
2. Step 2: Convert to fraction form
   2,151.07/2,968.77 = 1,555.49/x
3. Step 3: Cross multiply
   2,151.07x = 2,968.77 × 1,555.49
4. Step 4: Simplify right side
   2,151.07x = 4,617,892.05
5. Step 5: Solve for x
   x = 4,617,892.05/2,151.07
6. Step 6: Final answer
   x = 2,146.79