Finding the Fourth Proportional to 1,727.60, 2,385.61 and 1,284.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,727.60 : 2,385.61 = 1,284.73 : x
2. Step 2: Convert to fraction form
   1,727.60/2,385.61 = 1,284.73/x
3. Step 3: Cross multiply
   1,727.60x = 2,385.61 × 1,284.73
4. Step 4: Simplify right side
   1,727.60x = 3,064,864.74
5. Step 5: Solve for x
   x = 3,064,864.74/1,727.60
6. Step 6: Final answer
   x = 1,774.06