Finding the Fourth Proportional to 2,007, 2,769.72 and 1,122.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007 : 2,769.72 = 1,122.81 : x
2. Step 2: Convert to fraction form
   2,007/2,769.72 = 1,122.81/x
3. Step 3: Cross multiply
   2,007x = 2,769.72 × 1,122.81
4. Step 4: Simplify right side
   2,007x = 3,109,869.31
5. Step 5: Solve for x
   x = 3,109,869.31/2,007
6. Step 6: Final answer
   x = 1,549.51