Finding the Fourth Proportional to 2,160.50, 2,981.50 and 1,374.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.50 : 2,981.50 = 1,374.42 : x
2. Step 2: Convert to fraction form
   2,160.50/2,981.50 = 1,374.42/x
3. Step 3: Cross multiply
   2,160.50x = 2,981.50 × 1,374.42
4. Step 4: Simplify right side
   2,160.50x = 4,097,833.23
5. Step 5: Solve for x
   x = 4,097,833.23/2,160.50
6. Step 6: Final answer
   x = 1,896.71