Finding the Fourth Proportional to 2,151.49, 2,969.04 and 1,219.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.49 : 2,969.04 = 1,219.99 : x
2. Step 2: Convert to fraction form
   2,151.49/2,969.04 = 1,219.99/x
3. Step 3: Cross multiply
   2,151.49x = 2,969.04 × 1,219.99
4. Step 4: Simplify right side
   2,151.49x = 3,622,199.11
5. Step 5: Solve for x
   x = 3,622,199.11/2,151.49
6. Step 6: Final answer
   x = 1,683.58