Finding the Fourth Proportional to 1,982.22, 2,972.31 and 1,162.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,982.22 : 2,972.31 = 1,162.10 : x
2. Step 2: Convert to fraction form
   1,982.22/2,972.31 = 1,162.10/x
3. Step 3: Cross multiply
   1,982.22x = 2,972.31 × 1,162.10
4. Step 4: Simplify right side
   1,982.22x = 3,454,106.59
5. Step 5: Solve for x
   x = 3,454,106.59/1,982.22
6. Step 6: Final answer
   x = 1,742.54