Finding the Fourth Proportional to 2,151.06, 2,968.47 and 1,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.06 : 2,968.47 = 1,219.50 : x
2. Step 2: Convert to fraction form
   2,151.06/2,968.47 = 1,219.50/x
3. Step 3: Cross multiply
   2,151.06x = 2,968.47 × 1,219.50
4. Step 4: Simplify right side
   2,151.06x = 3,620,049.17
5. Step 5: Solve for x
   x = 3,620,049.17/2,151.06
6. Step 6: Final answer
   x = 1,682.91