Finding the Fourth Proportional to 2,109.00, 2,911.09 and 1,224.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.00 : 2,911.09 = 1,224.63 : x
2. Step 2: Convert to fraction form
   2,109.00/2,911.09 = 1,224.63/x
3. Step 3: Cross multiply
   2,109.00x = 2,911.09 × 1,224.63
4. Step 4: Simplify right side
   2,109.00x = 3,564,993.59
5. Step 5: Solve for x
   x = 3,564,993.59/2,109.00
6. Step 6: Final answer
   x = 1,690.38