Finding the Fourth Proportional to 1,616.81, 2,426.43 and 1,296.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.81 : 2,426.43 = 1,296.05 : x
2. Step 2: Convert to fraction form
   1,616.81/2,426.43 = 1,296.05/x
3. Step 3: Cross multiply
   1,616.81x = 2,426.43 × 1,296.05
4. Step 4: Simplify right side
   1,616.81x = 3,144,776.43
5. Step 5: Solve for x
   x = 3,144,776.43/1,616.81
6. Step 6: Final answer
   x = 1,945.05