Finding the Fourth Proportional to 1,982.34, 2,975.12 and 1,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,982.34 : 2,975.12 = 1,398.50 : x
2. Step 2: Convert to fraction form
   1,982.34/2,975.12 = 1,398.50/x
3. Step 3: Cross multiply
   1,982.34x = 2,975.12 × 1,398.50
4. Step 4: Simplify right side
   1,982.34x = 4,160,705.32
5. Step 5: Solve for x
   x = 4,160,705.32/1,982.34
6. Step 6: Final answer
   x = 2,098.89