Finding the Fourth Proportional to 1,105.56, 1,657.56 and 994.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.56 : 1,657.56 = 994.83 : x
2. Step 2: Convert to fraction form
   1,105.56/1,657.56 = 994.83/x
3. Step 3: Cross multiply
   1,105.56x = 1,657.56 × 994.83
4. Step 4: Simplify right side
   1,105.56x = 1,648,990.41
5. Step 5: Solve for x
   x = 1,648,990.41/1,105.56
6. Step 6: Final answer
   x = 1,491.54