Finding the Fourth Proportional to 1,619.52, 2,426.88 and 1,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.52 : 2,426.88 = 1,206.72 : x
2. Step 2: Convert to fraction form
   1,619.52/2,426.88 = 1,206.72/x
3. Step 3: Cross multiply
   1,619.52x = 2,426.88 × 1,206.72
4. Step 4: Simplify right side
   1,619.52x = 2,928,564.63
5. Step 5: Solve for x
   x = 2,928,564.63/1,619.52
6. Step 6: Final answer
   x = 1,808.29