Finding the Fourth Proportional to 1,728.47, 2,385.30 and 942.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.47 : 2,385.30 = 942.53 : x
2. Step 2: Convert to fraction form
   1,728.47/2,385.30 = 942.53/x
3. Step 3: Cross multiply
   1,728.47x = 2,385.30 × 942.53
4. Step 4: Simplify right side
   1,728.47x = 2,248,204.88
5. Step 5: Solve for x
   x = 2,248,204.88/1,728.47
6. Step 6: Final answer
   x = 1,300.69