Finding the Fourth Proportional to 2,153.57, 2,972.98 and 1,445.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.57 : 2,972.98 = 1,445.16 : x
2. Step 2: Convert to fraction form
   2,153.57/2,972.98 = 1,445.16/x
3. Step 3: Cross multiply
   2,153.57x = 2,972.98 × 1,445.16
4. Step 4: Simplify right side
   2,153.57x = 4,296,431.78
5. Step 5: Solve for x
   x = 4,296,431.78/2,153.57
6. Step 6: Final answer
   x = 1,995.03