Finding the Fourth Proportional to 2,012.72, 3,000.32 and 1,903.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.72 : 3,000.32 = 1,903.28 : x
2. Step 2: Convert to fraction form
   2,012.72/3,000.32 = 1,903.28/x
3. Step 3: Cross multiply
   2,012.72x = 3,000.32 × 1,903.28
4. Step 4: Simplify right side
   2,012.72x = 5,710,449.05
5. Step 5: Solve for x
   x = 5,710,449.05/2,012.72
6. Step 6: Final answer
   x = 2,837.18