Finding the Fourth Proportional to 2,224.57, 3,338.94 and 1,129.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,224.57 : 3,338.94 = 1,129.72 : x
2. Step 2: Convert to fraction form
   2,224.57/3,338.94 = 1,129.72/x
3. Step 3: Cross multiply
   2,224.57x = 3,338.94 × 1,129.72
4. Step 4: Simplify right side
   2,224.57x = 3,772,067.30
5. Step 5: Solve for x
   x = 3,772,067.30/2,224.57
6. Step 6: Final answer
   x = 1,695.64