Finding the Fourth Proportional to 1,491.72, 2,057.85 and 994.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.72 : 2,057.85 = 994.56 : x
2. Step 2: Convert to fraction form
   1,491.72/2,057.85 = 994.56/x
3. Step 3: Cross multiply
   1,491.72x = 2,057.85 × 994.56
4. Step 4: Simplify right side
   1,491.72x = 2,046,655.30
5. Step 5: Solve for x
   x = 2,046,655.30/1,491.72
6. Step 6: Final answer
   x = 1,372.01