Finding the Fourth Proportional to 1,619.76, 2,426.24 and 1,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.76 : 2,426.24 = 1,180.72 : x
2. Step 2: Convert to fraction form
   1,619.76/2,426.24 = 1,180.72/x
3. Step 3: Cross multiply
   1,619.76x = 2,426.24 × 1,180.72
4. Step 4: Simplify right side
   1,619.76x = 2,864,710.09
5. Step 5: Solve for x
   x = 2,864,710.09/1,619.76
6. Step 6: Final answer
   x = 1,768.60