Finding the Fourth Proportional to 2,180.62, 3,002.70 and 1,972.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.62 : 3,002.70 = 1,972.23 : x
2. Step 2: Convert to fraction form
   2,180.62/3,002.70 = 1,972.23/x
3. Step 3: Cross multiply
   2,180.62x = 3,002.70 × 1,972.23
4. Step 4: Simplify right side
   2,180.62x = 5,922,015.02
5. Step 5: Solve for x
   x = 5,922,015.02/2,180.62
6. Step 6: Final answer
   x = 2,715.75