Finding the Fourth Proportional to 2,160.26, 2,981.59 and 1,404.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.26 : 2,981.59 = 1,404.98 : x
2. Step 2: Convert to fraction form
   2,160.26/2,981.59 = 1,404.98/x
3. Step 3: Cross multiply
   2,160.26x = 2,981.59 × 1,404.98
4. Step 4: Simplify right side
   2,160.26x = 4,189,059.84
5. Step 5: Solve for x
   x = 4,189,059.84/2,160.26
6. Step 6: Final answer
   x = 1,939.14