Finding the Fourth Proportional to 2,038.56, 3,057.72 and 670.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.56 : 3,057.72 = 670.56 : x
2. Step 2: Convert to fraction form
   2,038.56/3,057.72 = 670.56/x
3. Step 3: Cross multiply
   2,038.56x = 3,057.72 × 670.56
4. Step 4: Simplify right side
   2,038.56x = 2,050,384.72
5. Step 5: Solve for x
   x = 2,050,384.72/2,038.56
6. Step 6: Final answer
   x = 1,005.80