Finding the Fourth Proportional to 2,003.28, 2,764.85 and 1,152.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.28 : 2,764.85 = 1,152.51 : x
2. Step 2: Convert to fraction form
   2,003.28/2,764.85 = 1,152.51/x
3. Step 3: Cross multiply
   2,003.28x = 2,764.85 × 1,152.51
4. Step 4: Simplify right side
   2,003.28x = 3,186,511.51
5. Step 5: Solve for x
   x = 3,186,511.51/2,003.28
6. Step 6: Final answer
   x = 1,590.65