Finding the Fourth Proportional to 2,012.56, 3,018.81 and 1,038.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.56 : 3,018.81 = 1,038.10 : x
2. Step 2: Convert to fraction form
   2,012.56/3,018.81 = 1,038.10/x
3. Step 3: Cross multiply
   2,012.56x = 3,018.81 × 1,038.10
4. Step 4: Simplify right side
   2,012.56x = 3,133,826.66
5. Step 5: Solve for x
   x = 3,133,826.66/2,012.56
6. Step 6: Final answer
   x = 1,557.13