Finding the Fourth Proportional to 2,224.80, 3,069.72 and 1,292.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,224.80 : 3,069.72 = 1,292.76 : x
2. Step 2: Convert to fraction form
   2,224.80/3,069.72 = 1,292.76/x
3. Step 3: Cross multiply
   2,224.80x = 3,069.72 × 1,292.76
4. Step 4: Simplify right side
   2,224.80x = 3,968,411.23
5. Step 5: Solve for x
   x = 3,968,411.23/2,224.80
6. Step 6: Final answer
   x = 1,783.72