Finding the Fourth Proportional to 1,728.12, 2,384.76 and 942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.12 : 2,384.76 = 942.18 : x
2. Step 2: Convert to fraction form
   1,728.12/2,384.76 = 942.18/x
3. Step 3: Cross multiply
   1,728.12x = 2,384.76 × 942.18
4. Step 4: Simplify right side
   1,728.12x = 2,246,873.18
5. Step 5: Solve for x
   x = 2,246,873.18/1,728.12
6. Step 6: Final answer
   x = 1,300.18