Finding the Fourth Proportional to 1,932.24, 2,665.08 and 1,224.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,932.24 : 2,665.08 = 1,224.20 : x
2. Step 2: Convert to fraction form
   1,932.24/2,665.08 = 1,224.20/x
3. Step 3: Cross multiply
   1,932.24x = 2,665.08 × 1,224.20
4. Step 4: Simplify right side
   1,932.24x = 3,262,577.61
5. Step 5: Solve for x
   x = 3,262,577.61/1,932.24
6. Step 6: Final answer
   x = 1,688.50