Finding the Fourth Proportional to 1,728.18, 2,384.90 and 942.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.18 : 2,384.90 = 942.22 : x
2. Step 2: Convert to fraction form
   1,728.18/2,384.90 = 942.22/x
3. Step 3: Cross multiply
   1,728.18x = 2,384.90 × 942.22
4. Step 4: Simplify right side
   1,728.18x = 2,247,100.48
5. Step 5: Solve for x
   x = 2,247,100.48/1,728.18
6. Step 6: Final answer
   x = 1,300.27