Finding the Fourth Proportional to 1,784.96, 2,460.92 and 1,224.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,784.96 : 2,460.92 = 1,224.40 : x
2. Step 2: Convert to fraction form
   1,784.96/2,460.92 = 1,224.40/x
3. Step 3: Cross multiply
   1,784.96x = 2,460.92 × 1,224.40
4. Step 4: Simplify right side
   1,784.96x = 3,013,150.45
5. Step 5: Solve for x
   x = 3,013,150.45/1,784.96
6. Step 6: Final answer
   x = 1,688.08