Finding the Fourth Proportional to 1,728.69, 2,385.59 and 942.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.69 : 2,385.59 = 942.74 : x
2. Step 2: Convert to fraction form
   1,728.69/2,385.59 = 942.74/x
3. Step 3: Cross multiply
   1,728.69x = 2,385.59 × 942.74
4. Step 4: Simplify right side
   1,728.69x = 2,248,989.94
5. Step 5: Solve for x
   x = 2,248,989.94/1,728.69
6. Step 6: Final answer
   x = 1,300.98