Finding the Fourth Proportional to 2,141.88, 2,953.98 and 1,645.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.88 : 2,953.98 = 1,645.74 : x
2. Step 2: Convert to fraction form
   2,141.88/2,953.98 = 1,645.74/x
3. Step 3: Cross multiply
   2,141.88x = 2,953.98 × 1,645.74
4. Step 4: Simplify right side
   2,141.88x = 4,861,483.05
5. Step 5: Solve for x
   x = 4,861,483.05/2,141.88
6. Step 6: Final answer
   x = 2,269.73