Finding the Fourth Proportional to 1,705.71, 2,353.89 and 998.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.71 : 2,353.89 = 998.06 : x
2. Step 2: Convert to fraction form
   1,705.71/2,353.89 = 998.06/x
3. Step 3: Cross multiply
   1,705.71x = 2,353.89 × 998.06
4. Step 4: Simplify right side
   1,705.71x = 2,349,311.68
5. Step 5: Solve for x
   x = 2,349,311.68/1,705.71
6. Step 6: Final answer
   x = 1,377.32