Finding the Fourth Proportional to 1,728.42, 2,385.24 and 942.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.42 : 2,385.24 = 942.47 : x
2. Step 2: Convert to fraction form
   1,728.42/2,385.24 = 942.47/x
3. Step 3: Cross multiply
   1,728.42x = 2,385.24 × 942.47
4. Step 4: Simplify right side
   1,728.42x = 2,248,005.22
5. Step 5: Solve for x
   x = 2,248,005.22/1,728.42
6. Step 6: Final answer
   x = 1,300.61