Finding the Fourth Proportional to 1,728.59, 2,385.46 and 942.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.59 : 2,385.46 = 942.64 : x
2. Step 2: Convert to fraction form
   1,728.59/2,385.46 = 942.64/x
3. Step 3: Cross multiply
   1,728.59x = 2,385.46 × 942.64
4. Step 4: Simplify right side
   1,728.59x = 2,248,630.01
5. Step 5: Solve for x
   x = 2,248,630.01/1,728.59
6. Step 6: Final answer
   x = 1,300.85