Finding the Fourth Proportional to 2,007.21, 2,769.69 and 1,123.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.21 : 2,769.69 = 1,123.02 : x
2. Step 2: Convert to fraction form
   2,007.21/2,769.69 = 1,123.02/x
3. Step 3: Cross multiply
   2,007.21x = 2,769.69 × 1,123.02
4. Step 4: Simplify right side
   2,007.21x = 3,110,417.26
5. Step 5: Solve for x
   x = 3,110,417.26/2,007.21
6. Step 6: Final answer
   x = 1,549.62